The CNC was not Designed for this!
Вставка
- Опубліковано 13 гру 2022
- Using the big DIY concrete CNC machine in ways we couldn't have foreseen!
The other part of this CNC video here: • Learning to use an ind...
To see how this CNC is made watch this: • Can we DIY an Industri...
The spindle motor in the video is a 240V single-phase Jianken JGL-100mm 3.2kw 24000rpm BT30 ATC. It has ceramic bearings and thus far seems very very nice. We chose a 4 pole one, which has somewhat more torque at lower rpm than the 2 pole, but requires at least an 800Hz VFD. You can find the spindles here: jianken.en.alibaba.com/ and if you do buy from them, message them and mention 'Flowering Elbow' to get yourself a discount!
For more videos on the CNC check out this playlist: • Bigger castings, melti...
APOLOGY relating to the grinding wheel: I'm super grateful to Baltic Abrasives, who were kind enough to supply me with this cubic boron nitride (CBN - which is NOT Diamond) grinding wheel free and no strings attached. The fault for specifying an inappropriate wheel or the job is all mine (arguably a grinding wheel has no place on a CNC router like this). Originally I was going to use it on the mini mill, so for the CNC the wheel was too large in diameter, not course enough, and should have had coolant to run properly.
When surfacing the mag vice, I now know it is common practice to first cut back the non-magnetic material (usually lead I believe) below the steel surface. This stops the soft lead from clogging whatever kind of grinding wheel is being used.
Many comments suggest using an aluminum oxide wheel, assuming we used a diamond wheel - we didn't! For hardened materials, like thicknesser knives made of high speed steel (but not so hard as carbide), a CBN wheel is a great choice. Compared to aluminum oxide it creates less abrasive dust, cuts cooler (less risk of thermal damage to the knife edge) and faster, and requires less re-dressing. It isn't so good if you clog it with super soft material like lead - my bad!
If you have an interest in CBN grinding, Baltic abrasives should give you a discount if you mention 'FloweringElbow' - they offer any type of diamond or CBN wheel (resin phenol bond, polyimide bond, hybrid bond, electroplated, vitrified, sintered or metal bonded). The bodies of wheels can be made of aluminum, aluminum powder, aluminum and bakelite, steel, and copper. There is no minimum order quantity and they do one-offs, standard or bespoke wheels. They ship worldwide from Lithuania, Europe. If you're interested, get in touch with Darius at: info@baltic-abrasives.com
and check out their e-shop www.lapidarywheels.com www.baltic-abrasives.com
The spindle motor in the video is a 240V single-phase Jianken JGL-100mm 3.2kw 24000rpm BT30 ATC. It has ceramic bearings and thus far seems very very nice. We chose a 4 pole one, which has somewhat more torque at lower rpm than the 2 pole, but requires at least an 800Hz VFD. You can find the spindles here: jianken.en.alibaba.com/ and if you do buy from them, message them and mention 'Flowering Elbow' to get yourself a discount!
Lets Connect!
Our website: www.FloweringElbow.org
FB: / floweringelbow
Ko-fi ko-fi.com/floweringelbow/
It's like ThisOldTony's kid grew up and found himself some shop space. Love it! Thanks for putting this together for everyone to enjoy.
lol. Appreciate the encouragement :)
Yeah except we can see his face. 😁
@@court2379 maybe it's him but we don't know!
As a CNC machinist for over 35 years i cringed so many times in this but i love your positive attitude.
A couple of tips for you if i may.
When milling the blade at the end, if you had made sure you had climb milled, you'd have pushed the burr to the inside of the face rather than over the side.
Trochoidal milling was definitely the right method for the pocket, but I'd suggest the cutter runs at around 120-150 m/min surface speed in steel and keep the stepover to under 10% of cutter diameter.
Oh and buy a center drill for spotting the holes - those chamfer / deburring tools dont last long when you try drilling blind !
PS just sitting here suffering from covid myself for the first time - IT SUCKS !!
Your videos are so out of the 'norm'... they are unrefined and yet very well put together at the same time, I absolutely love them. Great work and keep them coming.
Yay, thank you!
Feels like old internet, it's great.
An epic tale with a splendid result at the end! Great video, thank you.
Many thanks maximus iron thumper! Love your vids BTW ;)
what a beautiful memorial stone. & I'm sure you can take the fact it was done by you in person to heart. It was made out of the love you both had for your father.
Now we want to see the planer after the sharpening.
Maybe in one coming soon. Ironically after sharpening the very next project was flattening a slab, slightly wider than the 400mm thicknesser - so it went on the CNC :)
I LOVE your never-say-die approach to everything! Your solutions are sometimes "outside the box", and often rather exciting. You may be learning as you go, but we are all learning heaps with you.
Condolences to Sam; so many sad stories result from Covid.
You have a way with words ,sir.... 🙄
RIP Mr. Turton... 😞
I absolutely love your JFDI approach and the solid belief that you can do anything that you set your mind to and if it goes wrong, then it's a lesson learned.
Cool.
You my friend are nothing short of "SENSATIONAL".....................Cheers from a like-minded "Badger" from OZ ♥
The reason for the slate work aside, this was a delightful video! Season’s Yeetings to you & Sam!
You are brave with what you are trying on your CNC. And after all that investment of time and jiggery pokery, you'd have to be delighted with that excellent result. Thanks for the video. Cheers, David
Seasons greetings Friend! Thank you so much for watching! Peace and love be with you :) If you haven't seen the CNC video that goes with this one, then see it@ ua-cam.com/video/zTQJpwYjUeg/v-deo.html
Love you Bud!
Worked as a Tool and Die Maker for around 20 years. I really enjoyed machine work. Wished I had a small CNC in my garage. Grinding them magnetic chucks can be tricky because you need to choose the right grinding wheel that is porous enough not to load up and soft enough to break down.
Impressive results in the end 😀
I loved every second of that...
Boy can those spindles take some punishment!!! :)
It might have taken a long time, with many side projects. But would you look at how ridiculously sharp that blade is? Brilliant result
'Ridiculous' - nicely captures the whole business ;D
@@FloweringElbow Yup! One down, two to go! Did the "sharpening" shop sharpen the blades free-hand?
@@GrayRaceCat one can only guess!
@@GrayRaceCat Looks like the sharpening shop attempted to use a dull beaver to sharpen it. Probably why you should take your planar blades to an actual machine shop or proper sharpening shop, not some yahoo in his garage with an angle grinder
I watched the build of the cnc so this is great seeing big progress.
Sorry to hear about your loss. Peace be with you Flowering Elbow.
Admirable tenacity!
I told you this thing was gonna be a monster. I just knew it. You did not disappoint. Gives me hope for my own epoxy-granite build currently in progress. Keep it up.
surprisingly interesting how each video is some story/trip :) .. I rewatched some of the old ones and still found them interesting, how insane and chaotic it all is, but somehow incredibly meticulous
So interesting, stone cnc, one of the things i've not thought about.
Your projects are plain incredible. I love these videos!
I can't believe how bad the planer blade was after the "professionals" had a go and took your money.
We're in the same boat!
Yea, such a bad job, you would think they should buy you a new blade.
That end result must have been so worth it!....Execution was sub par but those results!.....Well done!👍👍 Two thumbs up!
How can this dude hold such a positive frame after all these little inconveniences? When my machine chips 1mm of wood out of a workpiece I feel like giving up on life all together.
Brilliant! So enjoyed watching you go through all this. Well done.
Oh, the myriad problems of making stuff work! I love it, please keep it up! Thank you.
Check out Ron Covell's video on rollation mate, he shows an easy way to make squares and rectangles into circles. Thanks for another awesome video man and I'm sorry for you and your girl's loss.
I'm a guy who has all the electronics skills but none of the ones for machining. I do get the kick from watching others do the machining though. Good job.
Thoroughly enjoyed the rewatch. Impressive sharpening job in the end. Quite the journey to get there!
Starting from one side and making a VERY small stepover (measured in thousanths) will mean the cup wheel will only cut on the corner instead of the face.... very slow but major reduction in spindle loading...
The "welding" in the bottom of the vee groove may be from re-cut where the swarf hasn't been removed and runs through the cutter over &over... 🤔
😎👍☘️🍺
RIP to your friend. It was a wonderful Stone. Happy holidays. I really enjoyed the video.
If only they can use such content in many grade schools to reinforce the "TRUTH" in, it's better to "TRY and (LEARN) from FAILURES, than NOT TO TRY AT ALL". Most, if not all, fail not because they are not smart but "Lack of Motivation to Persevere". You are many like you are the prime example of saying "FAILURE IS NEVER THE FIRST OPTION". Just love your content while learning without ME doing it 🤣🤣🤣👍👍. Big thanks and greetings from US
Really glad I found this channel. It itches my need to see things being built/ worked on.
Definitely some shaving-the-yak action here... but still very cool!
a grinder on a precision slide with a reciprocator is how you grind and polish surfaces. you could have put your grinder in a router table and push the clamped planer blade and jigss over the spinning honing stone flush with the table. good luck.
@Private Private : Boring...! If he had done that, we would have been denied this fantastic video! 😉
this is a diamond grinding disc. it's made for grinding carbide tools and hardened tool steel. any material softer than that will clog and damage this wheel.
you need a conventional oxide wheel for your task (that stone ones from a bench grinder). but it can shatter.
the better way to do such a crazy job is to mount an angle grinder to the Z axis.
Haha, love this project and the ideas and jigs needed to complete a nice final product. Also the cutting of stone with a cnc was fascinating.
Thanks again my Orange Baron, appreciate the encouragement :D
Your videos are good teaching moments, keep up they great work!
Wonderful video and projects. Thank you for never giving up!
Awesome experimentation and learning. End result is amazing. Well done.
some things about grinding, slower feeds and dressing the diamond wheel will work wonders on what you can grind
Wow, i'm very impressed of your cnc as well as of the sharpening result!!!
Wow amazing effort and fantastic results. Your persistence is astonishing. Hats off to you Sir.
Oscar-winning stuff and a great ending giggle of hair-raising precision, thanks for a brilliant 28 minutes :)
Gravestone looks amazing mate. Love the knife sharpening success-bungle.
We had a cnc router at the place I used to work at.
We had a vacuum extraction system clamped to the cutter head.
Several times it went on fire. First time was worst, took out one of the big bags and required a fire extinguisher to put out. Not a great hazard in a concrete building but...
After that the operator was a bit more careful. We still had problems with it though.
This is my favourite video of yours yet!
Wow - Really appreciate that friend. Care to say what exactly you like, so maybe I improve the next ones?
@@FloweringElbow I don't know i guess it seemed to flow well so nice editing, saw a few different projects, saw lots of good CNC action after watching you build it for so long.
I like the general flow of trying to a thing (planer blade) and then seeing all the side quests that you go on (dust collector, mag chuck, work holding jigs etc.) it's pretty cool!
Thank you, this video makes me want to go back to my workshop. Well done👍and keep it up👊
you make that look way too easy. hats off to you friend.
"So anyway, I hope that explains why we're not using the surfacing tool"
Me: "OOohhh! Right! We were rebuilding a mag vice!"
Hahaha that's so funny. I loved that.
You made me wince, watching you run your bare fingers back and forth over the freshly cut steel. I was always digging metal splinters out of my fingers after doing that sort of thing!
Very informative & interesting. Thanks for showing the trials & errors to achieve the ultimate success. Job well done!
That was exciting to watch.
Fantastic! Great project and practical use of your CNC 🎉
Thank you very much! :D
Fantastic, great job.
"And there you go!" Subscribed.
Sometimes if you do everything a little bit wrong, everything turns out fine. We call this luck and perseverance. 😅Keep up the good work and be safe.
Idea: mount the mag chuck perpendicular to the table and cut with the circumference of the grinding wheel
That was really interesting.....from someone who had little idea what was happening. Merry Christmas.
Try it, fail, try it, fail.. That is how progress is made!!!
Really hope Sam is doing good man.. That's very sad to hear that her Dad passed away in Hospital during Covid bcos I know ppl weren't allowed to see their loved ones during that time.. My kindest regards to Sam my friend.. I love the videos mate. They show me what can be achieved with a little grunt and a lotta thought.. Fair play to ya mate.. U have built a fine CNC mahine there snd I hope it makes u a tonne of cash oin the now and future bro.. Salute from Ireland..
Endless Inspiration 👍👍😎👍👍
If you look at a scalpel under a microscope, you'd see small groves in the blade. That is how sharp it is.
Hi! its hard to believe that's actually stone, looks like plastic on video lol
"This Old Tony" has a great video on CNC Checkering.. IMHO fiddling with software surface mapping is easier* and more flexible with the materials you can use ; Granted you pay the upfront cost of a DRO.
I love the work you've done so far! Best of luck with future projects!
Good morning azzoubk6777, thanks for getting in touch. I know what you mean about the slate - it was very smooooth. Yeah, I think I have seen the video you mean - I'll be setting up a probe etc at some point and yeah it would have worked with the stone well (rather than all the re-zeroing I did), But I wouldn't want to be testing out the system on that stone, so many things that could go wrong already... Thanks again, Bongo.
@@FloweringElbow Bongo.. Ha! cool name..
Mine is Toast...
Overcomplicated? Yes. But, you will be getting amazing finishes on the lumber you'll be planing.
That is sharp, LOVE IT!!
Your machine is awesome, very nice and very respectful doing the headstone yourself. I like all your engineering prowess. You may find that your cornering speeds need to reduce to save your bits from snapping, that's if it only happens around corners, although a 20% feed speed reduction bay serve you well. Very nice work throughout and honesty with the grinding, definitely worth a try though 👍
I recommend you try adding an angle to the spindle so only one point of the grinding wheel contacts the surface. Cut up and down the chuck with a very small step-over in the cross-feeding axis added every other pass.
I really enjoy your videos. I find them very relatable as I have recently built a cnc router and am using it to mill steel. I’m also learning Fusion360 and metal casting. Great work! Keep it up.
Appreciate that friend :D
Great video as usual! Love seeing the process including the problems you had, that's real life. The original sharpening on that blade was terrible, did they use a handheld grinder?!
I cannot believe you did this.
Awesome projects! Am I right in thinking that the grinding cup makes the surface flat because it's only cutting on the rim? Theoretically, you should be able to use a smaller diameter and still get a good surface flatness, and then there's less torque on your spindle and it might not stall?
Hey Leo, you are spot on correct! A smaller wheel, as well as requiring less torque, would have a correct surface speed at a higher RPM (closer to the spindles torque zone). I originally thought I'd be (mis)using this wheel on my mini mill (full speed 1500rpm)... Thanks for watching and commenting friend :)
@@FloweringElbow hi Bongo! Before you try this again, find and watch Joe Pie's video on using a mill as a grinder if you haven't seen it yet. He did more or less the same thing using a smaller white cup wheel, and he explained a lot of the theory and how to ensure it works well for you. I think Joe covered it as well, but you'll also absolutely need a diamond single point dressing tool for a ceramic based grinding wheel. I'm pretty sure Joe also put a bevel onto the cup wheel, leaving the perimeter as the edge that made contact with the workpiece.
It's been awhile since I've watched the video so I apologize if my answers weren't more helpful. Also take a look at Blondihacks, I think she might have done the same trick.
Great video, and truly well executed with a bunch of persistent hard work. Keep it up!
@@ChristopherGoggans Thanks Christopher, I appreciate that :D
First time seeing one of your videos 👍👍👍👍loved it.
Good evening friend. Thanks so much for watching, and welcome :D
Love the vid's. It's good to see the 'how not to' along with the success's.
I Built my 600 x 900 CNC about 5 years ago with help from a local chap (In his '80's..) and generally annoyed him by just taking his 'principals' and building the frame with my own idea's.. oops. Truth was I didn't like all the problems that welding caused.. (and I couldn't weld anyway..)
As a retired carpenter I have lots of woodworking tools and machines.. but also had experience with working 'Resin' boards of various kinds.. Trespa.. Meg.. Compact.. (Thick HPL..) and has proved invaluable over the years for jig making and in this case (CNC..) the framework and platten and for the bearings to run on. I would certainly recommend Trespa as an alternative to many metals as it machines very smoothly, has the density and appearance of Slate and is very stable. Like wood, it is layered so screwing into the side may split the board but can be thread 'Tapped' very successfully. It can occasionally be found on ebay in 6 -12mm thick sheets or go and raid some public toilets where it is used as doors and walls.. (Not advocating this of course..)..
Good luck on your adventures.
Superb work, the beautiful struggle 😂
Sounds like we had similar months. I built a big (2m x, 3m y, and 1m z)axis CNC out of blood, sweat and metal. I had one last issue I had to resolve where the z-axis was going out of allignment due to the fact that it was temporarily driven by a 3d printed pulley which caused the belt to slip occasionally. It needed to be replaced by an alluminum pulley. Problem was the hole on the metal pulley was too small for my ballscrew. I therefore built the most terrifyingly overpowered lathe attachment for my cnc for the single purpose of making one hole bigger on a pulley. Lathe attachment worked though and has not killed me yet. z-axis is no longer losing allignment after replacing the pulley. No I can start production with my CNC. Now time for step 2. Step 1: Build giant CNC. Step 2: ? Step 3: Profit!
Condolensces to you and sam
If you are not exploring the boundaries of your machinery and your skills, you're not learning much either. Another great episode. I built a massive flycutter for my Bridgeport. It uses carbide inserts and if you crank the feed rate down pretty far, it can very nearly produce a mirror finish. After that step, it's not too bad to touch up the edges and surfaces by hand since the proper geometry has already been achieved.
Sharpening guys must have been a lawnmower shop.
the best sensor to add is a sensor that can see if the dust collector has catched fire.
loving your vids! I got myself a CNC mill and ended up finding myself on this side of UA-cam and been binging your vids since lol.
Always great to hear my friend :D Hope you get something useful out of them ;)
@@FloweringElbow thank you I know i will, whether it be useful parts or just having fun messing around with it.
Hooray, more CNC goodness. BUT, how does Sam feel about you shaving off all of your body hair and auditioning for a role in the remake of The Kinks "Lola"? :-D
HAHAHA. I'll have to ask.
Your videos are always sure to please ! Well done with what you have learned . I was aching to lend you my planer blade grinder ..... but distance .......we have pretty much similar thicknessers. There are carbide edged blades available which last a lot lot longer and can also be sharpened the way you did the HSS blades . Good luck - thanks for the videos !
awesome wholesome channel
Those first steel recipes looked quite good. High feed mills might be worth some investigation seeing you have a relatively high speed spindle.
Brilliant! Like all your videos.
Appreciate that friend 🙏
The blue colour of the chips mean heat is drawn from the stock piece. So that is a good thing
once I am "finshed" building my cnc I will also get to some grinding^
If you're needing to sharpen the planer blades again, you can make magnetic 'transfer' angle blocks that will conduct the flux up to the blade and hold it properly, instead of shorting it out (just holding down the blocks). They are made with stacks of brass/aluminum and steel in a similar manner to the surface of the magnet chuck. The CNC machine could cut out the profiles and pin holes from sheet stock. (Don't pin them with steel). The downside is that you would need several blocks as the blade is pretty thin.
Another option is mounting the magnetic chuck at an angle like you did in the beginning. Then placing a small brass/aluminum shim under the blade. This should give you just a tiny bit of clearance from the surface of the chuck to grind to the edge. The blade would be held down with a strip of steal, the entire length of the blade, with a rabbet cut down the length so it touches the chuck and the top of the blade.
Congrats! well done1
That's the wrong kind of grinding wheel for that use case, you'd be better off with an Aluminium Oxide wheel if you can find one in a cup style. Keep your depth of cut under 0.03mm.
Hi I think your videos are fab ! I actually did exactly this 2 weeks ago but on my bridge port with a smaller 75mm diamond cup workout really well but the main issue was keeping everything cool id love to send you a video clip 👍👍
the chips being blue is good, you want the heat going into the chips and not the mill or work piece, especially when cutting dry
Its an impressive machine, huge volume.
I would see about a steel or aluminium clamping bed.
Maybe T slots or smooth holes & threaded holes.
Maybe a partial vacuum chuck.
There's a lot of options you could borrow from milling machines / machinist's.
Hey Deepwinter, thanks for watching. Agreed, I think it would be very worth it to upgrade the bed. I'm kinda hoping to find some old cast iron mill table or something - to replace a section of the spoil board, that I could then use for metal machining. Peace, Bongo.
@Deepwinter : Keep watching... I have a strong feeling "We ain't seen nuthin' yet"!
There is Lead surrounding those segments which will gum up you diamond disc , they want scraping out just below the surface which will let air/coolant get into it and should give better result.
I used to have to scrape them out as an apprentice.
Wooow. Mind blown - I think this would have been the saving grace of this adventure... Had I but the wit to know...
to correctly collect the chips you need to use some linear brushes like the ones you used to cover the ballscrews on the edges of the vacuum shoe, also that need to be at a fixed height by clamping it on the carriage of the X axis, not on the Z axis. very good video and impressive machine !
I just stumbled across your channel... keep up your great work! i really enjoy watching your videos:) i admire your broad skill!
Just a small input... maybe look into FDM 3D printing ;) especially for such freeform geometry's like dust shoots etc. I thing you could use this really well! best wishes from Austria! :)
Good job!
Thanks!