I thought the same. I haven’t fired a shot myself in nearly six months, I have a huge slab of rock about 30 metres long and 8-10 metres wide that I need to take down by about a metre to run a farm laneway through. Great information in this video on fatigue from the drill, and how to reduce it. i have a pressure regulator fitted to my compressor also.
Hey, thanks for watching and contributing Jonathan, Oh... you will be a bit second hand after you drill all of that, presuming that you will do it with small diameter holes and a hand drill. For sure, use a real heavy drill and run at 90 PSI and not 100 PSI - drill all day no problem. What drill are you using?
*_PERFECT BLAST =_* right expert, right experience, right local knowledge, right planning, right number of boreholes, right diameter, right depth, right explosive, right booster, right detonator, right initiator, right timing delays, right stemming, right backfill or blast mats, right warnings... when everything goes right, surrounding structures are not damaged by seismic vibrations or flying rock debris, and when this is repeatable... you have a perfect blast done by a perfect blaster... safety first, last, and everything in between... *_Dave we salute your perfection and get a real blast watching your videos..._*
You need to do more videos like this with some educational information included. I had seen you mention “witness tubes” but never understood how to set them up or what purpose they served until I did my renewal course with Pyro Paul last year. I have been doing agricultural blasting for about 27 years, but have learned more from your videos than I ever have from the worksafe endorsed courses. Of all the trainers, Paul has been the best yet with a practical common sense approach!
Ha hahahah... Guess where Paul got his early blasting experience. He continues to help out from time to time, you can find him in quite a few of my videos.
for all of your videos ive watched i never noticed the water pipe insulating foam. thats what i have to do on my brick hammer handle because of hand problems caused by just a few years of jack hammering and other abuses. i tried other stuff like lots of tennis handle tape but the pipe foam is best. good operator. i watched him move a big rock so he could use it for leverage to work out another big rock.
This video show your skills as a clever blaster. Crack the rock with tiny thump. With a very skilled operator to for a cleaned site. Thanks for all the time and effort you put into these videos.
I've liked your video's for a long while but these little snippets of direct to camera information are making nice to watch videos great to watch. Many thanks and kindest regards from Scotland.
@@demolitiondavedrillandblast It is by no means a criticism Dave, merely an observation from someone who has never created nor crafted a video in my life. Do as you please mate it's all good.
That was a very interesting situation Dave, old houses in close proximity to the blast site must be of concern and at the forefront of the calculations as you were saying towards the end of the video. I bet you didn’t even wake the locals up from their Nanna Naps! Well done again, and having worked with a lot of excavator operators both big and small machines, he did a great job for you. Thanks again mate 👍🏼👍🏼
The fact you're comfortable and competent to the degree you're willing to blast in that situation... I'm in awe. Especially since that looks like a shelf and not a boulder, to me. Stunningly good work! Edit: Using the primacord to crack the harder rock shallower in the hole and put the main charge's gas to work in breaking it instead of just wasted in pulverizing the bottom, brilliant! You have many tricks in your belt, truly.
How meet, right, just and proper is Demolition Dave's work. During the blast, there is a yellow flower, visible at the bottom center. How careful DD is that that flower is completely unaffected by an explosion of that magnitude. This is some of the most impressive work I watch on UA-cam. Thanks again, Dave. But no blasted poetry today. At least from me. Cheers!
Hey Dave, Excellent Video !!! I really like your coverage of saving your hands and explaining of dropping the charge. Me not knowing a whole lot about Blasting, Your explaining of the charge really helped me to understand a bit better. I'll be the first to say at 65, I don't know everything and this just gives me a little better insight on your job. Thanks Dave for a Great video, Thank You for sharing it with us.
Humungous rocks! Interesting section concerning your drill and choice thereof - I seem to remember some folks suffer "De Quervain's" disease in their hands with repetitive use - you've done well over 30 years and the extra cushioning on the grips obviously helps a lot., though I often wonder how your back (and hips!) have held up. Lots of other valuable info re holes, charges etc.. End results - excellent :) Good having an excavator operator with skills.
Dave, there is something not right with your job. You dig a hole, drill more holes, fill them in, fill in the big hole, and then blow it up and dig the hole again, but we love it.
OH NO! i cant believe you put the foam handle on like that, can wait till my ball n chain gets home, and show her if dave can do it for the cameras so can she 🤣🤣
Love this channel 💥. Great to see a little more detail on how you load the shots. Very clever method using the heavy det cord on top of a lower velocity charge for the harder rock layer. Det cord packs a punch alright. Dave you mentioned a witness line on the shock tube? Is that so you get a visual indication that all the charges have been initiated in the shot? Also are the delays on the junction clips or in the detonators as per normal?? Keep up the good work its very entertaining mate 👍
Thanks for watching Andy, the witness tubes tell me that the shot has successfully propagated to every hole and that none of the tubes have been damaged in the covering process. each of the surface clips has a short time delay element, different color for each different delay period. The hook up configuration set the firing order and inter hole delay period. Then the is also a much longer down hole delay in the detonator so that no detonator fires and get the rock moving before all of the down hole dets have been initiated and started the count down to bang time.
MM77 Approved 👍🏼 👍🏼………………………………………………………………Thanks for the behind the scenes tutorial on how you do things. I love knowing how things are done and the process that folks go through to do their jobs. One of my favorite shows is “ How It’s Made “. Now I know a little more about how you do your job, thanks again!
Always a treat to watch you demonstrate your skills Dave. Chappeau to Lucas the Excavator driver too, he definitely has the 'touch', hooking up that triggered blast tube with the end tooth ya show off 🙂
I've got a heap of construction going on nearby and the dust is insane, so thank you for doing what you can to mitigate it while drilling the shot holes!
The damage to the hands is called white finger and is well known in the trade. It’s not just prevalent in drilling but all hand tools especially percussive hand held tools. There is no cure for it, you can mitigate its damage but not prevent it.
Is it important to use colour-coordinated tape on the drill handles? Daft question. It's obviously totally bloody crucial. This was one of your best ever videos Dave. Great camera angles and well timed cuts to keep it interesting. And I am only up to the new drill handle padding so who knows what delights lay ahead of me. On with the video.😎
Nice work Dave and thanks for all the good info. I seem to reconize this site from a previous video. Jeeze the excavation costs must be enormous. Hope the owners go the whole hog and install a wine celler at the bottom of that huge pit.
Done a lot in this estate David, all of these blocks on the high side of the road have the same style granite retaining walls that were build from the stone that was blasted to get the sewers and drains in.
Great job Dave... carving out that kind of rock, in that tight of an area that quickly..... You are the man! You made a difficult job look easy! PS...I will be integrating your cushioning onto my drills soon, can't wait to feel the difference! I currently use the vibration gloves....i might get wild and use both😂. Thanks for sharing, be safe out there
Brilliant job and video as usual ! Great explanation of the goings on too ! What’s the music you’re using for the Timelapse’s ? The funky EDM Synth stuff ! Cheers 😊
OK..... 00:32 Winter embrace - Silent partner. 2:56 Young squire - Track tribe. 4:51 Remembering her face - Silent partner. 18:58 Fast and run - Nico Staf. 23:48 Finland - Track tribe. 27:12 Care about you - Destiny and time. All UA-cam royalty free music from the UA-cam libary
Love the videos, it’s a pleasure watching someone who is really good at their job. Just curious, does the rock that’s pulled out get used for anything afterwards?
Using that pipe insulation is cheap as chips of course. You might investigate some motorcycle grips there are some out there that are very good at isolating vibration. But of course they're they're going to be a few bucks
what is the wires that you use composed of? is it just a normal electrical wire that carries an electrical charge to the blasting charges? or is it a burning ''wire''? and how much, if any of it could be replaced with biodegradable materials? so you wouldn't have to worry as much about pulling out the leftovers after a blast
That looks a lot better than the old Atlas Copco Roger and I used. We put padding on it too. Question, my licence has lapsed. Do you have to be licenced to use the Expando?
Dave, I never see you using a seismograph. Here in the states, I use one for recording vibration, even though it is within the scaled distance tables, set by the Bureau of Mines. Haven't had a vibration claim yet.
Hi Dave! Good content man. Too much dirt. lol I wanna see fly rock and big boulders flying up in the air in a residential area.( Just kidding) Why is the stemming not tamped down? it would seem the blast energy would be more contained and focused in the hole. It would also seem that loose stemming would just be blown back out of the hole. What is the role of stemming in the design? The other demolition channels I watch, they don't tamp/pack stemming either. Hope your having a good week. It was 112F(44.4C) on my front porch a couple days ago here in Ohio, USA. It's more common in the Southern US in the summer. Usually around 80F(27C) here in the summer, and cooler at night. You are getting into winter, and I'm guessing the temps are moderating in AUS. More pleasant. More rain too?
Freezing our buts of at the bottom end of "Down Under". The most effective stemming is hard and sharp screened crushed rock that is between 10 and 15% of the hole diameter. this will tightly grab the walls of the hole and jam up when the blast fires. Loose poured is just fine and it is very easy to remove if you should need to.
If I coil up all of the excess next to the hole, it makes the whole nasty situation easier if there is a partial missfire and I have to uncover it to find the problem and fix it.
That is a fine method when you are using electric dets, however when using signal tube dets, the tube is a lot thicker than wire and does not want to pull tight and stay tight with these small plugs.
Depends on how much bang I put in the hole. In general people are a lot more sensitive than the building and they will let you know a long time before the damage threshold is reached. I can calculate the resultant vibration with a fair degree of accuracy and aim to be inside the safe level.
@@demolitiondavedrillandblast thank you for the reply Dave, I’ve always been curious about that. In the Canadian military I’ve used C-4 to create road blocks, and diversions, felling trees and such things to slow or stop the advancement of our opponents, but I have zero knowledge of effects on surrounding countryside, the more damage the better, anything to slow or stop their advancement. Another great video, have a great day
I use heaps of it Russell, pro's no license required, silent, no vibration. Con's many more holes required, hence larger drilling cost, inferior result as the is no shattering and lifting. a whole play list of jobs - ua-cam.com/video/SbLGTPdLVqY/v-deo.htmlsi=HYwqmNRuLAN0qnbB
@@demolitiondavedrillandblast Thanks, my workplace is planning to put a water treatment pond approx 20x50m. 1-2m deep in sandstone on fairly flat ground. Just looking at the options.
It is all just time and materials, I would only give an estimate based on the number of days that I think it should take. Very risky to put a hard price on these jobs, so many variables to manage and all you need is a lazy excavator operator and the estimate goes out the window.
3:13 The wide angle lens makes it look like either a midget Dave or a giant excavator. 😁 Wish more had been known about hand/arm vibration syndrome back in the 1970's as I have arthritis in both basal thumb joints from years of operating chainsaws back then.
Jeez Dave, if I was back in Australia I'd be pestering you to take on an apprentice - I'm not sure you'd want a fat bloke in his 40s though! Do you get many folks interested in this field? Do they need to come with any TAFE or Uni qualifications?
Thanks Dave for a another smashing video. I noticed that you are removing the wire from your blasted site .Is there a reason why you you are doing this mate 👍 👌 👏
Yeah... a real good reason, the little plastic surface delay clips say "Danger Explosive" on them and when some vexatious neighbor who apposed the development, searches the site and finds one (that has obviously gone bang), they call the bomb squad to stir up trouble for us.
I would think that heat shrink would be too hard and tight. Electrician's tape remains soft and pliable. I have used electrician's tape on the handle of a wooden handled knife, and it makes an excellent soft controllable grip.
I used to work with a guy that drilled for most his life. He was about your size maybe a tad bigger. We could put the biggest of men on there knees with a handshake. Never met anyone with stronger hands. When we was younger he could pop sealed a beer can by squeezing it.
"he could pop sealed a beer can by squeezing it". - Oh... what a shame! Ha ha ha.... I'm not sure that I'm particularly strong, but I have excellent physical endurance.
i swear Dave given the land mass to population size down there there is absolutely no sane reason to pack houses on top of one another like that! it's a damn fire hazard for one thing! one house catches fire and a gentle breeze the next thing you know the whole development is going up because they're so close together!! people down there have got to start telling no to pie in the sky hippy bullshit like that!!! anyway old Harley uses radiator hose for his handles sometimes air hose if his buddy on the railroad can get it for him! he also taught me when using D cord like that to tape the cord to the down tube so it doesn't hang up in the hole on the way down!
i watched this with my grandson and he asked why you waste so much cord and i tried to tell him that its to do with the timing to get them to go off all togther or in sequence... might be worth a video explaining why...
You know you are watching an expert digger driver when he is picking the spent shot cord off the rocks and adding them to Dave's waste pile. :)
Yep!
@@demolitiondavedrillandblastis it mandatory that you pick up all the little pieces of det cord?
Top notch digger work, absolute quality claw action! That digger operator deserves a pay raise!
Yeah, he was good! Looking forward to the next time we work together.
100% agree, picking out some of the blasting stuff when Dave disappeared for a bit was interesting to see
oh hell yeah! another video from our favorite explosives expert! i feel spoiled having two videos so close in a row! :D
More to come Alex!
@@demolitiondavedrillandblast oh exciting!
I agree 100%
I thought the same. I haven’t fired a shot myself in nearly six months, I have a huge slab of rock about 30 metres long and 8-10 metres wide that I need to take down by about a metre to run a farm laneway through. Great information in this video on fatigue from the drill, and how to reduce it. i have a pressure regulator fitted to my compressor also.
Hey, thanks for watching and contributing Jonathan, Oh... you will be a bit second hand after you drill all of that, presuming that you will do it with small diameter holes and a hand drill. For sure, use a real heavy drill and run at 90 PSI and not 100 PSI - drill all day no problem. What drill are you using?
*_PERFECT BLAST =_* right expert, right experience, right local knowledge, right planning, right number of boreholes, right diameter, right depth, right explosive, right booster, right detonator, right initiator, right timing delays, right stemming, right backfill or blast mats, right warnings... when everything goes right, surrounding structures are not damaged by seismic vibrations or flying rock debris, and when this is repeatable... you have a perfect blast done by a perfect blaster... safety first, last, and everything in between...
*_Dave we salute your perfection and get a real blast watching your videos..._*
You need to do more videos like this with some educational information included. I had seen you mention “witness tubes” but never understood how to set them up or what purpose they served until I did my renewal course with Pyro Paul last year. I have been doing agricultural blasting for about 27 years, but have learned more from your videos than I ever have from the worksafe endorsed courses. Of all the trainers, Paul has been the best yet with a practical common sense approach!
Ha hahahah... Guess where Paul got his early blasting experience. He continues to help out from time to time, you can find him in quite a few of my videos.
Lucas is a quality operator with a great machine.
100%
for all of your videos ive watched i never noticed the water pipe insulating foam. thats what i have to do on my brick hammer handle because of hand problems caused by just a few years of jack hammering and other abuses. i tried other stuff like lots of tennis handle tape but the pipe foam is best. good operator. i watched him move a big rock so he could use it for leverage to work out another big rock.
Oh yeah, the Armaflex is excellent, I would be broken without it.
Dave all this time I thought you had some sort of magic neoprene padding; so simple what you use!
No... just good old "Armaflex" local.armacell.com/en/armacell-australia/products/technical-insulation/armaflex-frv/
I Get a blast watching these videos ;-}
Me too!
Nice practical trick with the pool noodles / pipe insulation .
Sure does the job.
Thanks Dave. It was a nice surprise to learn how to put on a rubber mid video! 🤣🤣
Nicely done. Skilled operator too.
He sure is.
This video show your skills as a clever blaster. Crack the rock with tiny thump. With a very skilled operator to for a cleaned site.
Thanks for all the time and effort you put into these videos.
Thanks for watching 1993
I've liked your video's for a long while but these little snippets of direct to camera information are making nice to watch videos great to watch. Many thanks and kindest regards from Scotland.
Thanks LLD I will take that on board.
@@demolitiondavedrillandblast It is by no means a criticism Dave, merely an observation from someone who has never created nor crafted a video in my life. Do as you please mate it's all good.
Never appreciated the amount of skill that goes into running one of those excavators until I saw it sped up like that.
This guy is real good.
Nice shot as is your norm Dave. You don't make it look easy but you make it look possible.
It is never easy Jim. Thanks for watching and contributing.
That was a very interesting situation Dave, old houses in close proximity to the blast site must be of concern and at the forefront of the calculations as you were saying towards the end of the video. I bet you didn’t even wake the locals up from their Nanna Naps! Well done again, and having worked with a lot of excavator operators both big and small machines, he did a great job for you. Thanks again mate 👍🏼👍🏼
Great video Dave Thanks mate
Glad you enjoyed it Pete.
The fact you're comfortable and competent to the degree you're willing to blast in that situation... I'm in awe. Especially since that looks like a shelf and not a boulder, to me. Stunningly good work!
Edit: Using the primacord to crack the harder rock shallower in the hole and put the main charge's gas to work in breaking it instead of just wasted in pulverizing the bottom, brilliant! You have many tricks in your belt, truly.
How meet, right, just and proper is Demolition Dave's work. During the blast, there is a yellow flower, visible at the bottom center. How careful DD is that that flower is completely unaffected by an explosion of that magnitude. This is some of the most impressive work I watch on UA-cam. Thanks again, Dave. But no blasted poetry today. At least from me. Cheers!
Thanks for tuning in.
Very good work with what we call a " Frost tooth " in Canada .
Hmmmmm... we call it a single tyne ripper.
506 👍's up demolition Dave thank you for sharing 🤗
It must be nice to have a blast at work every day.
it is!
Its funny how with a proper covered shot, the alarm is a lot louder than the blast.
100% The alarm is often a bit shorter than it should be so as not to scare people.
Thanks for the commentary!
My pleasure!
Hey Dave, Excellent Video !!! I really like your coverage of saving your hands and explaining of dropping the charge. Me not knowing a whole lot about Blasting, Your explaining of the charge really helped me to understand a bit better. I'll be the first to say at 65, I don't know everything and this just gives me a little better insight on your job. Thanks Dave for a Great video, Thank You for sharing it with us.
Thanks for tuning in again Rich, more video coming soon.
@@demolitiondavedrillandblast glad to hear that. I really enjoy watching.
Thanks Dave, that was a good video.
Glad you enjoyed it, thanks for dropping in again.
Humungous rocks! Interesting section concerning your drill and choice thereof - I seem to remember some folks suffer "De Quervain's" disease in their hands with repetitive use - you've done well over 30 years and the extra cushioning on the grips obviously helps a lot., though I often wonder how your back (and hips!) have held up. Lots of other valuable info re holes, charges etc.. End results - excellent :)
Good having an excavator operator with skills.
Sure is helpful to have a good operator, no muscular or skeletal issues so far Chris.
Hey Dave, really nice to see you’re working away! Interesting chat about your drill too!
Thanks for watching and contributing.
Nice. Great to see two DD vids nearly back to back.
More to come TC
Heck yea, great video. Thanks for sharing.
And thanks for watching.
Dave, there is something not right with your job. You dig a hole, drill more holes, fill them in, fill in the big hole, and then blow it up and dig the hole again, but we love it.
I make a big mess and then send a bill.
Awesome video. Takes a lot of skill and restraint to blast in an area like that with out pissing people off.
Yes... and people are getting easier to upset these days!
Ha, they've always been easy to upset.@@demolitiondavedrillandblast
OH NO! i cant believe you put the foam handle on like that, can wait till my ball n chain gets home, and show her if dave can do it for the cameras so can she 🤣🤣
Good luck with that...
The digger operator is such a pro!
he is
Love this channel 💥. Great to see a little more detail on how you load the shots. Very clever method using the heavy det cord on top of a lower velocity charge for the harder rock layer. Det cord packs a punch alright. Dave you mentioned a witness line on the shock tube? Is that so you get a visual indication that all the charges have been initiated in the shot? Also are the delays on the junction clips or in the detonators as per normal?? Keep up the good work its very entertaining mate 👍
Thanks for watching Andy, the witness tubes tell me that the shot has successfully propagated to every hole and that none of the tubes have been damaged in the covering process. each of the surface clips has a short time delay element, different color for each different delay period. The hook up configuration set the firing order and inter hole delay period. Then the is also a much longer down hole delay in the detonator so that no detonator fires and get the rock moving before all of the down hole dets have been initiated and started the count down to bang time.
@@demolitiondavedrillandblast ahh I see that makes perfect sense 👍 Thanks for the reply Dave
MM77 Approved 👍🏼 👍🏼………………………………………………………………Thanks for the behind the scenes tutorial on how you do things. I love knowing how things are done and the process that folks go through to do their jobs. One of my favorite shows is “ How It’s Made “. Now I know a little more about how you do your job, thanks again!
No problem 👍
Funny how Dave's sound track reminds me of the music from " How it is made". In this case, " How it is demoed".
Great job Dave. Thanks for the video
Right on! 1.1D! Just what the doctor ordered! Best channel on YT!
Love the colour coordinated tape Dave
You got it.
You do your job to perfection Dave, a pleasure to watch the expert in action. Thanks for sharing the videos.😃💯💥👌👍💣
Thanks Jake.
Your advice to dont be smoking is so very right ,and its my worst vice. I am constantly fighting that battle, and its my own damn fault.
Yeah... that is a real tough fight Joe, soldier on.
@@demolitiondavedrillandblast YesSir.
Great explanation on vibration control. I have used exactly the same product with tape on a mower handle!
Good stuff!
another Awesome Expert Job !!!
that air broom does a good job
Sure does Rodney. It is also the best tool ever invented for getting an eyeful of dirt, hence the full face mask.
Thanks for the education and entertainment.
Thanks for tuning in Robert.
woohoo another dave video thank you dave!!
Always a treat to watch you demonstrate your skills Dave. Chappeau to Lucas the Excavator driver too, he definitely has the 'touch', hooking up that triggered blast tube with the end tooth ya show off 🙂
Yeah, he was good to work with.
Heck yeah!! Thank you Dave !!!
Heck yeah!! and Yiiiihaaa!
Dave thank you for sharing about the drill and what you do to keep yourself in good shape.
You and Lucas teamed up to do a rocking good job.
Thanks Noel, Lucas is real good to work with. 👍
Nice to see you again! Love seeing that det cord!
Hi Dave, Great video! Always fun to watch a pro make gravel! Thumbs up! Stay safe. Jim
Thanks for tuning in Jim.
I've got a heap of construction going on nearby and the dust is insane, so thank you for doing what you can to mitigate it while drilling the shot holes!
Have to, it is nasty stuff to breath!!
another great job dave
Great job sunshine,
I really miss doing this type of work :(,
but great to see your videos :)
Post some video of your work!!
Ah, the big 'danger noodle' and pink 'fairy dust' - just don't put them near your fairy cakes!... :0
I see that you have been paying attention Rangie.
Real nice blasting, and the operator was top notch!
That storm looked like a biggin!
Thanks Paul.
Outstanding work
Thank you! Cheers!
Great job! but as always!
Thank you my friend, I hope that you have some nice weather for working at this time of year.
I got it, red tape on the handles makes the red drill go faster and smoother. The insulation is to protect your knees!
The damage to the hands is called white finger and is well known in the trade.
It’s not just prevalent in drilling but all hand tools especially percussive hand held tools.
There is no cure for it, you can mitigate its damage but not prevent it.
Great work Dave :)
Many thanks!
Is it important to use colour-coordinated tape on the drill handles? Daft question. It's obviously totally bloody crucial. This was one of your best ever videos Dave. Great camera angles and well timed cuts to keep it interesting. And I am only up to the new drill handle padding so who knows what delights lay ahead of me. On with the video.😎
Thanks for watching Trevor, more coming soon.
A pleasure to watch as always mate. Hope u all doing good
Thanks, all good 👍
Nice work Dave and thanks for all the good info.
I seem to reconize this site from a previous video. Jeeze the excavation costs must be enormous. Hope the owners go the whole hog and install a wine celler at the bottom of that huge pit.
Done a lot in this estate David, all of these blocks on the high side of the road have the same style granite retaining walls that were build from the stone that was blasted to get the sewers and drains in.
G'day Dave nice job mate
Thanks
Great job Dave... carving out that kind of rock, in that tight of an area that quickly..... You are the man! You made a difficult job look easy! PS...I will be integrating your cushioning onto my drills soon, can't wait to feel the difference! I currently use the vibration gloves....i might get wild and use both😂. Thanks for sharing, be safe out there
Great, I have used the gloves in the past, I found them to be helpful but expensive. Let me know how you go.
Brilliant job and video as usual ! Great explanation of the goings on too !
What’s the music you’re using for the Timelapse’s ? The funky EDM Synth stuff !
Cheers 😊
OK..... 00:32 Winter embrace - Silent partner. 2:56 Young squire - Track tribe. 4:51 Remembering her face - Silent partner. 18:58 Fast and run - Nico Staf. 23:48 Finland - Track tribe. 27:12 Care about you - Destiny and time. All UA-cam royalty free music from the UA-cam libary
Another great video, Dave! Thank you. Please tell us about your timing design: is there a specific sequence of shots, or do you fire them all at once?
No... definitely not all at once or there would be a huge jolt and everybody complains.
Love the videos, it’s a pleasure watching someone who is really good at their job. Just curious, does the rock that’s pulled out get used for anything afterwards?
It often gets used in landscaping or walling or just goes to a crusher. Thanks for watching.
Using that pipe insulation is cheap as chips of course. You might investigate some motorcycle grips there are some out there that are very good at isolating vibration. But of course they're they're going to be a few bucks
what is the wires that you use composed of? is it just a normal electrical wire that carries an electrical charge to the blasting charges? or is it a burning ''wire''?
and how much, if any of it could be replaced with biodegradable materials? so you wouldn't have to worry as much about pulling out the leftovers after a blast
This is not wire but hollow plastic signal tube.
That looks a lot better than the old Atlas Copco Roger and I used.
We put padding on it too.
Question, my licence has lapsed. Do you have to be licenced to use the Expando?
Atlas Copco Roger.... not familiar with that one. The Expando and similar products are not dangerous goods, no license required.
Do you add the bit of anfo as a bridge to the DC?
yeah
Dave, I never see you using a seismograph. Here in the states, I use one for recording vibration, even though it is within the scaled distance tables, set by the Bureau of Mines. Haven't had a vibration claim yet.
Ah.... I have one, look here - ua-cam.com/video/OJVkS-d6tzo/v-deo.htmlsi=R46Q3Iyysv574rct&t=551
Nice job alround Dave, .......did you have to go round the neighbours and straighten the pictures on their walls? 😉
No, they were all fine.
Do you and the excavator operator work on the same jobs all the time? Thank you and have a great day.
No, first time with Lucas.
Nice cushion for the handle.
Yes, makes a huge difference scruffy.
Hi Dave! Good content man. Too much dirt. lol I wanna see fly rock and big boulders flying up in the air in a residential area.( Just kidding) Why is the stemming not tamped down? it would seem the blast energy would be more contained and focused in the hole. It would also seem that loose stemming would just be blown back out of the hole. What is the role of stemming in the design? The other demolition channels I watch, they don't tamp/pack stemming either. Hope your having a good week. It was 112F(44.4C) on my front porch a couple days ago here in Ohio, USA. It's more common in the Southern US in the summer. Usually around 80F(27C) here in the summer, and cooler at night. You are getting into winter, and I'm guessing the temps are moderating in AUS. More pleasant. More rain too?
Freezing our buts of at the bottom end of "Down Under". The most effective stemming is hard and sharp screened crushed rock that is between 10 and 15% of the hole diameter. this will tightly grab the walls of the hole and jam up when the blast fires. Loose poured is just fine and it is very easy to remove if you should need to.
Why do you leave coils next to every hole filled with explosive?
If I coil up all of the excess next to the hole, it makes the whole nasty situation easier if there is a partial missfire and I have to uncover it to find the problem and fix it.
when watching others blasting they use the det wire half hitch to the banger to hold the detonator in place can that action cause issues
That is a fine method when you are using electric dets, however when using signal tube dets, the tube is a lot thicker than wire and does not want to pull tight and stay tight with these small plugs.
How far would the vibrations travel. I”m asking because of the building on top of the hill.
Depends on how much bang I put in the hole. In general people are a lot more sensitive than the building and they will let you know a long time before the damage threshold is reached. I can calculate the resultant vibration with a fair degree of accuracy and aim to be inside the safe level.
@@demolitiondavedrillandblast thank you for the reply Dave, I’ve always been curious about that. In the Canadian military I’ve used C-4 to create road blocks, and diversions, felling trees and such things to slow or stop the advancement of our opponents, but I have zero knowledge of effects on surrounding countryside, the more damage the better, anything to slow or stop their advancement. Another great video, have a great day
Is the operator someone you have worked with before? He seems to know 2hat you need as far as picking out the tubing and picking rock. Nice job.
What would you say is your average powder factor on the shots in this video? Thanks!
Do you use that expando stuff much? What's it's pros and cons? thanks.
I use heaps of it Russell, pro's no license required, silent, no vibration. Con's many more holes required, hence larger drilling cost, inferior result as the is no shattering and lifting. a whole play list of jobs - ua-cam.com/video/SbLGTPdLVqY/v-deo.htmlsi=HYwqmNRuLAN0qnbB
@@demolitiondavedrillandblast Thanks, my workplace is planning to put a water treatment pond approx 20x50m. 1-2m deep in sandstone on fairly flat ground. Just looking at the options.
Have question what would you rather have as a cover sand or dirt for blasts?
Sand every time.
@@demolitiondavedrillandblast I take it it is softer than dirt ?
Yes, and no chance of damaging the plastic signal tubes
How do you determine what to charge? By the amount of your time you estimate will be required? By the amount of rock to be removed? Something else?
It is all just time and materials, I would only give an estimate based on the number of days that I think it should take. Very risky to put a hard price on these jobs, so many variables to manage and all you need is a lazy excavator operator and the estimate goes out the window.
3:13 The wide angle lens makes it look like either a midget Dave or a giant excavator. 😁
Wish more had been known about hand/arm vibration syndrome back in the 1970's as I have arthritis in both basal thumb joints from years of operating chainsaws back then.
I have been very fortunate so far 42, no muscular or skeletal issues.
Howdy demo Dave
Amazing how they shoe horn houses into postage stamps! Good news for you more work!
Oh... this is a large block of land by current standards!
Jeez Dave, if I was back in Australia I'd be pestering you to take on an apprentice - I'm not sure you'd want a fat bloke in his 40s though! Do you get many folks interested in this field? Do they need to come with any TAFE or Uni qualifications?
They need to come with a willing to listen and learn attitude and strong body.
Thanks Dave for a another smashing video. I noticed that you are removing the wire from your blasted site .Is there a reason why you you are doing this mate 👍 👌 👏
Yeah... a real good reason, the little plastic surface delay clips say "Danger Explosive" on them and when some vexatious neighbor who apposed the development, searches the site and finds one (that has obviously gone bang), they call the bomb squad to stir up trouble for us.
Melbourne weather: Four seasons in a day.
100%
Just like Central Alberta. Sun morning,cloud,rain then wind with hail or snow sun, rinse and repeat repeat. 😂😂😂😂😂😂
Impressive, Sir. Next time I'm in the market for a $25M garage, I will definitely give you a call. Just three more zeros to go...
I wasn't expensive at all in the pig picture.
🤣
...Good morning (G'day) from North Carolina, US. ☕👍
After something like this does the rock get sold on just dragged away
I'm not sure where this lot went Andy, sometimes goes to a crusher or someone who wants rocks.
Dave would it be possible to use heat shrink over that foam ?
I would think that heat shrink would be too hard and tight. Electrician's tape remains soft and pliable. I have used electrician's tape on the handle of a wooden handled knife, and it makes an excellent soft controllable grip.
@@davidhandyman7571 I've always called it "Blaster's tape ". Seems we use more of it then electricians.
Morning Dave, bit big of a hole for a mans' cave 😂
I used to work with a guy that drilled for most his life. He was about your size maybe a tad bigger. We could put the biggest of men on there knees with a handshake. Never met anyone with stronger hands. When we was younger he could pop sealed a beer can by squeezing it.
"he could pop sealed a beer can by squeezing it". - Oh... what a shame! Ha ha ha.... I'm not sure that I'm particularly strong, but I have excellent physical endurance.
i swear Dave given the land mass to population size down there there is absolutely no sane reason to pack houses on top of one another like that! it's a damn fire hazard for one thing! one house catches fire and a gentle breeze the next thing you know the whole development is going up because they're so close together!! people down there have got to start telling no to pie in the sky hippy bullshit like that!!! anyway old Harley uses radiator hose for his handles sometimes air hose if his buddy on the railroad can get it for him! he also taught me when using D cord like that to tape the cord to the down tube so it doesn't hang up in the hole on the way down!
i watched this with my grandson and he asked why you waste so much cord and i tried to tell him that its to do with the timing to get them to go off all togther or in sequence...
might be worth a video explaining why...
The detonator assemblies come in pre made lengths only. 8 ft. is the shortest, 150 ft. about the longest.