Scary Prototype Shredder Design; A Cheap Alternative to the Precious Plastics Design: 036
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- Опубліковано 11 вер 2024
- Experimental shredder designed to be cheap and easy to build. It clearly needs additional guarding of the blades. Got Questions? Let me know in the comments. I love to talk about it!
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That is terrifying
You should be standing in front of it! Man it is loud and scary! LOL
wait til he starts melting the plastic. Molten HDPE is kind of like napalm without the flames. It's still hot, and it can stick to you too.
Jeremy Fielding that would be great for the plastic extruding machines I use to run as a machinist. if you could add a pellet making machine for it the plastics people would buy your prototype or just your plastics and use it like 10 percent sometimes 20 percent recycled in there machines, Joseph T
I have modified mine down to a 1/8" blade separation it grinds leaves nice I just need more HP thinking of a 7 HP gas engine. Want it to shred cardboard as well.
"We might just have ourselves a shredder!" (insert evil laugh here)
I'd like to paraphrase Crocodile Dundee here... "That's not a shredder!" Then points to Jeremy's instant finger amputater - THAT"S a SHREDDER!
Having removed fingers on a table saw in the past, this was by far the scariest thing I've seen on film in 40 years!
Your UA-cam name says it all lol
A couple of "safety" features... Lol
That thing is crazy dangerous.
Awesome!! Also, the safety-nanny guild of the internet are calling an emergency meeting once they recover from the debilitating attack of the willies you just gave them!!
It gives me the willies LOL This thing is scary!
Could easily make a tracked pusher to drop plastic in n push forward keep hands safely away, one Trac each side for the sled , drop n push. Would protect from throw back too .
We are on the same page my friend. Very easy addition I think... and it is still easy and cheap to make
I was going to say, that's insanely dangerous, your fingers get anywhere close to those blades and there won't be anything to re-attach.
Dangerous indeed! You should have seen what it was like before I added the shear plate and lexan cover!! Now that was scary! I am working out a better guard. That was just so I could start testing the concept before I invested too much time in it.
I think I saw one of those in a James Bond movie.
Would encasing the blades with plexi and then putting a opening on the top make it safer? And what about using smaller blades inbetween?
I need the shear plate. When the blades where closer together the blades didn't "shear" the plastic. They grabbed it and snatched it out of my hand in one piece! Talk about scary! Wider actually works much better. The plan is to make a port in the front and a plunger to force the plastic into the blades. It will be too deep to get your hands inside.
I hope you test the processed product you're making too. Fluffy shredded HDPE doesn't melt too well in my experience with it. It will melt, and you'll get plastic out of it. But between it, and just chopped up HDPE I much prefer how chopped up works out. I mean maybe if you could stir the plastic, or draw it like taffy you might be able to mitigate the fluff factor? But I haven't tried doing any of that myself. I just end up with speckly blocks. Molten HDPE is some pretty scary stuff itself. Kind of like napalm that's not on fire yet? It will stick to you like glue, and burn you badly though. So how much molten HDPE can practically be manipulated is an issue.
I think make the sides a foot higher, blades from one side to the other, close the front, drop the plastic into the top. Experiment with the size of shred evacuation port, so that the shred is naturally cycled, shrinking it's size before falling to the catch bin. The powder created is excellent filler when heat molding the blanks/planks.
Fun and scary :). Inneficient for a shredder though- this is more of a milling machine, but with gaps to make stringy bits. Industrial shredders run much slower (but high power gearage), with opposing toothed discs to chomp up the right size pieces, using a fraction of the power and manhandling per kg of plastic processed. I have been dreaming up using multiple rotary cutting discs, like you have here, to make a garden shredder for pelletizing hedge trimmings so thanks for the idea of a "shear plate". Do read up on health and safety at work though xx
this reminds me of the time I fell head first into a woodchipper back in 45'
World's most dangerous shredder. I love it.
Yeah.. this thing is scary!
Scary? The hold time I saw you pushing the plastic in, I was hearing
"Jaws music.' Da dump! Da dump! Da dump! Something like that, playing in
my head. Please make a slot about 3/8' thick or something not big
enough that the fingers can't get in. You may also be able to put a
cylindrical adapter on it, and turn it into a small wood chipper. Two
for the price of one. Nice!
It will have a hopper and a plunger to push the plastic in
You should consider a wood chipper style inlet chute fed from above. Great concept, scarey as all hell. Lol
+john carville it will have a front loading hopper with a plunger to push in the plastic
Yup just a couple of safety features and you got a winner! Just got hang on to your fingers long enough! :)
Thanks again for sharing this video with us.
really love your editing where it shows what each part is and labels everything.
i'm trying to remember where i saw this. voltron vs robeast, batman vs villian, he-man vs trap jaw or james west in a wild wild west episode.
Hey Jeremy, great videos. I am binge watching and learning. One suggestion for this video is not to throw away the piece of plastic from the milk carton that has the label on it. Fill the carton with some very hot water, lay it down on the label side, and the label will then peel off in one piece quite easily.
hot water is energy consuming too. the way you suggest is not good for the enviroment
Go man... The biri biri stuff you do in the editing is fantastic! I wish more content creators learn how to do similar stuff!
All you gotta do now it build a hopper in front to keep your fingers away from the blades and you're good to go! At a place I used to work at, our shredders also had heavy hanging curtain strips in the feed hoppers to do just that. Congrats on a really good idea!
I've been thinking of a similar design, thanks for talking me out of it. I dub thy machine "The Mangler".
LMAO!! The speed on that thing!!! The results are impressive and a couple of mods and I would say you have one hell of a shredder!!
You better believe it! Thanks
East you threw away it had a label on it all you had to do is put hot water and the glue will come right off then you can remove the label I've done this a few times
Emilio Greenwood, I always use a heat gun. Thanks, I'll try the water!
"Hey, look Maw I'm recycling!" Throws the perfectly good plastic in the trash
I love the evil chuckle at the end..lol
So do I LOL
For feeding the plastic into the grinding blades, why not set the table base at a 30 degree angle allowing for gravity feed grinding?
Jeremy, could you place knives between the saw blades to shear the strips at the shear plate. Smaller diameter dado blades between the saw blades might get rid of the tendency to saw strips. And, ya, its dangerous LOL.
+chappy726 check out the following video 41. I talk about blades in between
Straight out of the plastic bottle apocalypse
Add another axle and another set of blades and spacers and have both sets turning into each other . Lower the rpm and get high torque low speed motor , and then you’ll have a shredder. Set your hopper up over the blades for gravity feed and shield the blades for safety, from what I can see, you’re about half way there. Good luck.
A very strong and sharp cylinder grater instead of them saw blades and you can get done cheap faster and with even smaller peices.
A photo-electric cell attached to the top of the lexan, pointing downwards, connected to a drop-out relay. This will cut the power when the PE cell gets covered in blood.
Keep up the great videos.
Interesting safety feature LOL.
I like the way it will fit nicely under my desk.
You’ve officially made the world’s most dangerous multi-rip saw
Alternate designs:
One: dado blades in the same position
Or
Vertical (and it appears that you have a vacuum attached to it? Well vertical: whatever
Horizontal: mount an impeller to it
Looks cool....a little dangerous but with the guard you are thinking about should work out great..
I think I would have used Knife Blade. I stationary Knife bolted to the frame. 2 other Knives bolted to a cylindrical drum . Space the knives around 2 thousands of an inch gap. Your final product will be really fine . I used to do blade changes for a plastic molding company .They had a Vermeer grinder . It ground up the defective bottles. Just a thought ! LOL awesome video's.
Oh HELL NO! How do you still have fingers? No guard on your band saw! No gloves! No tongs to use to feed in the plastic. No finger guard!
I am gonna call your mother, young man!
Thank you very much. I was wondering if my old saw blades would work and did not want to put the time into it and find out it did not work. That definitely works good enough for what I need. Thanks again for showing this idea will work.
Matey matey matey. That thing works great but having lost the top off one of my fingers in a planer I would simply not be using that without some guards. Some serious re-designing is needed there. Once you chop bits of your fingers off they can't always put them back on and it takes many months to heal. Trust me on this.
No need to throw away the label part. Just put some hot water in jug and shake it up for a few seconds and the label will peel off easily.
This is some James Bond evil genius ingenuity right here, both terrifying and effective. If you had another set of blades spinning the opposite direction that plastic would wish I it had never been born.
"The Amputator 1000... Let me show you its f-e-a-t-u-r-e-s!"
loved seeing this go ;-)
I think putting the blades closer together and reducing the speed to around 200 rpm may work better. I guess you have to determine the optimum size of the chips before you can optimize the process. Some type of crosscut mechanism would help too.
I tried small blades in between, I tried dado blades, I tried putting the blades right next to each other without spacers. I tried higher and lower speeds. What you see in the video works the best. Basically the shear plate makes the difference. If the blades are too close you don't have enough shear plate to stand up to the force. They break off... once the gap is open the bladed don't cut, they grab the plastic and snatch it out of my hand. Now that was dangerous and very scary indeed. if the speed is too slow it grabs the plastic and snatches it from my hand, or really slow and it just jams and stops the blades completely.
Jeremy Fielding thanks for the details. Have you tried feeding it into a powerful crosscut shredder? I'd bet that a set of crosscut shredder blades connected to a 1.5hp motor would give the right size and shape.
It sounds like you've tried a lot of different things. I'm looking forward to seeing where you land.
Thanks for sharing your experiments with us.
+Tony Shulthise I started with one of those cheap paper shredders (cross cutting blades) it could not cut the plastic. The plastic just jammed. I still have the blades but I don't think they can handle a large motor pushing them. I think the teeth would break. If it was a 20+ sheet shredder, that would probably do the job. I am trying to come in below that price using things people might have in their shop with few special purchases... if any
Jeremy Fielding now you are going to have me obsessing about this ;-)
Terrifyingly effective with emphasis on the terrifying.
That thing looks Wicked dangerous, I like it!
love the evil genius laugh at the end ! i think you have something there, well done !
Thank you Gary. I am excited about where this is going. Once I get this plunger and hopper worked out we might be ready to start painting this thing!
If you add dust collection half your plastic will go away. Add a vacuum and filter to the collection bucket so that it draws all the plastic dust down and into the bucket. One of those cyclone dust collectors would be good as a catch bucket.
That is the idea. The "collected" dust goes to the bucket with the rest of the plastic
Might I suggest a push block inside of a clear enclosure so you can be remote from the absurd danger.
Like a piston and cylinder.
Getting better and better. Scarier and scarier. lol Well done.
That's one scary machine. Well done.
Nice straight forward idea......Haven't checked if it has been suggested, but going with smaller blades would "gear down" the whole thing quite a bit in a very simple way; Can't quite tell your dimensions, but going from, say, a 6½ inch blade to a 3 3/8 inch reduces "tooth speed" by a factor of about 6 times. "Noname" 3 3/8 inch 18T carbide tipped blades can be bought for 6-7$ as far as I've found. This also reduces the load on the motor and disc friction "shear" forces between the axle components the same about 6 times. Plus the whole thing would get more compact. And a bit less scary.......a bit....;) (Have watched your part 2)
Chris. Thank you for the suggestion. I bought these primary based on price (about $6 each). However, I love your suggestion and will investigate this. I agree completely with your assessment. This is a change I will likely make if I can get them with the right arbor size. Or, I will have to change my bearings and shaft away from 5/8". We shall see.
I also plan to change the height relative to the blades. I want to go above the center-line instead of below it. I think that will solve the other nagging problem of the plastic being "sucked" in from the user instead of being chewed up like I want.
Consider making the height slightly adjustable and maybe having a bit of a slant towards the blades ( maybe the shear plate could be a supported/hinged piece kept at height by adjustment bolts pushing up against the plane just in front or either side of the blades?). If feeding via a hopper, the optimum height setting might depend on the thickness and density etc. of the material to keep it feeding by itself at a reasonable pace with thin stuff, but not getting jammed when a thick lump of something goes in. The 3 3/8 blades I've seen so far had ½ or 19/32 inch arbor size, but I haven't been too thorough; I live in Europe, so I'm not exactly accustomed to US tool shopping ;). Closest thing here would be a 76mm blade, which has 10mm arbor.
Vertical- the feed should be vertical (hopper). Deep enough to keep fingers well out of the way...
I would get those pinkies insured a bit pronto Jeremy, great job though 👌🏼
i think the downside is harder & longer to collect the granulates, but the upside is we can get smaller granulates & quicker shredding process than the original precious plastic design.. it's cool, i love channel like this, experimental process so we get a sustainable process.. thank you
Dado angle the blades towards each other. Use spacers with one end shaved creating a flat surfaces with hi and low faces opposite each other angling the blades towards each other delivering a wobbly 180deg. rotation.
I love playin' guitar, and that thing scares the HELL outta me!
Your video editing is like the best stuff I've seen on UA-cam.
Not only is it scary... it is loud! Much louder than a table saw. That adds to the fear factor! A frontal guard is definitely required.
Thank you (regarding the editing)
Adjust it so you can just drop pieces in instead of hand feeding it from the front/side (gravity fed hopper)....make the side walls taller too as I’m sure the pieces dropped in will get kicked around a bit from the forces of those blades
A hopper will be the last addition. This is just a proof of concept. It was never my intention to feed pieces one at a time by hand. I will have a push block as well to make sure it all goes through instead of bouncing on top or being thrown back out which is what happened in the unseen prototype with hooper before this one. So I started feeding it as I worked out the bugs. There are too many changes since this video to explain it all but an update will come in video form
Jeremy: THE SHREDDER MASSACRE
Oh boy, what an idea.... would like to see, when the whole can is shredderd.
Go on. Regards from Germany.
Jeremy, you are well on your way to becoming a Bond super-villain! All you have to do is scale that thing up and put some lasers on it, just for effect. ;)
That would be funny... but yeah... it is scary. I just posted a video to address the safety concerns... and other comments! Please watch it is worth it.
My biggest fundamental concern is plastic getting wrapped around the axel at high speeds, which could suddenly stop the machine and possibly fracture the disks. Has anything like this happened?
You can get 7 in blades for less than $10, so this is very interesting.
Also, could this possibly work in a low speed high torque configuration? Or is it fundamentally required that it operate at high RPM?
id put a like machine on the other side intertwining the blades with a protective case round it and feed it through the top. Both would work against themselves and pull the plastic down so you dont have to risk your limbs. Might work.
I am trying to come up with a way to shred copper wire so I'm watching all these types of vids to get ideas. Thank you
Scary is right, but awesome! "We just might have ourselves a shredder MWA HA HA HA!"
'couple of safety features'? Feature 1: install 500ml of gasoline, light. Now i will be able to sleep at night again.
I just posted a video to answer this comment! Please watch it is worth it.
I made one similar about 5 years ago only mine dropped in from top.
Very loud but effective. Nice job
That's brilliant and scary, love it.
Definatly need a feeder tube an a push rod set up. But it works.
Is there a reason you didn't make it top gravity feed so you can add a hopper?
EDITED: You answered it in the next video. Although I think the only legitimate problem is blowing it back out and that can be fixed.
+Mark Proffitt this design is changing fast. It is difficult to respond because several things have changed. There will be a video on this after I finish the clock series.
looks like a death trap haha, i bet you could find a bunch of used circular saw blades at a construction yard, and then just make a hopper to shuffle the plastic in. For what I am doing, I get a paddle bit and an old HDPE cutting board, and just drill it and melt the chips, or ill just hit it with a hammer into small pieces. You earned a subscriber, can't wait to see where this goes.
Welcome to the neighborhood! It is a death trap in its' current state. But I will add guarding etc so you can't get too close to the blade. I have a few other changes I need make as well, but I having fun prototyping it.
Mate, that is so dangerous full marks to you for using that thing, it would scare the life out of me , lol !! Keep up the good work, look forward to seeing what you may come up with next !!
Great invention Jeremy, but I was so nervously watching your fingers inches away from those spinning blades I fainted. Use Lexan to protect fingers. We Can still see your project working. Phew!
Glad to have you back with us. Additional guarding in the front is a must! LOL this thing is scary indeed. I will use a hopper style box with a plunger to push plastic into the blades. That will keep my finger attached for sure.
after cutting my thumb on the table saw while trying to reduce huge treadmill plastics into smaller more compact bits - i decided its time to look for a safer method. Initially tried a Hot knife: nice idea but makes tons of smoke - another kind of health hazard. so Im thinking maybe a treadmill motor powered wood chipper - just need a chipper with a toasted motor as a donor. (i haul customer's treadmills away when they aren't worth fixing)
Jeremy....DADO SET!!! And you're done. Well, after you get the safety squared away. Lol
Dado Blades vibrate too much. I tried that. You have to rotate them exactly right or they shake the whole machine. Using whole saw blades makes them all balanced automatically. Additionally, I have been tinkering with the spacing.. and wider is actually better than closer together
Plus cheap circular saw blades are cheap. Dado sets are never cheap.
Seems to me it might work better if the blades were side by side and didn't have an eighth to quarter inch gap in between them. With each chisel on the blade offset from the blade next to it. Maybe I'm missing something but I feel it would nearly powder it if configured that way. Have you tied that set up?
I was wondering what brand diaper you were wearing when you first tested it out?😂 Lol.
Definitely terrifying but definitely awesome lol. I do a lot of the same type of things you do and we do things in a very similar way. I love all of your videos, keep em coming and thank you 👍🏼
Oh my, your right it is scary! Make sure and count your fingers when your done!
Hey Jeremy, I love your videos! They are to-the-point, extremely informative, well produced, no over the top Hollywood "Look, I'm my own celebrity" bullshit AND now with added, HUGE up-yours to the prophets of the Religions of Health & Safety. It's his hands, people, he's a grown man with a very smart head on his shoulders; let him risk it if he wants to. Do you really think it's your duty or responsibility to be his babysitter?
DONT EVER DO THAT AGAIN!!!!
i dont wanna loose such a good channel
So mesmerized... must... stick... face... into it....
anything but the face! lol
wow that works good , been thinking about using smaller sawblades , but the big ones work seem to fine
wonder how good it would work if you use two shafts with interlocking sawblades running towards eachother and build a wedge shaped funnel over the top with the grooves in it to alow the material to be pulled out from between the blades and back intoo its teeth
i think if you make the wedge from a folded piece of thick aluminium you can realy slowly lower it ontoo the sawblades splinning and cut those grooves so there a perfect fit before pemanently mounting it over them
Cool video :) the plastic, looks like a coconut , similar like coconut machine shredder :)
thanks for experimenting on a cheaper DIY design for the shredder! i think most people determined enough could reckon their way by your example. that saw dust texture would seem ideal for use. get up a sizable chunk of the larger pieces and send them down the chute together. very cool!
You bet. The size and texture of the pieces are pretty much perfect now. There are a few long thin pieces that get though but that doesn't cause any problems with melting it. Once I get my push-block worked out (so we all can keep our fingers) We will have something that is both easy and cheap to build.
You've melted that? I've never had much good luck melting fluffy HDPE. I don't melt injection molded HDPE anymore though so that might be a factor. Injection HDPE is a lot runnier when it is molten than blow molded HDPE is. Let's see a block that you've made.
Paul... I haven't tried melting it yet. I may need to adjust the "pulverizing" nature of my design if that becomes a problem. Thank you for the pictures in the other post. You are always so engaged and helpful with my videos and I want you to know I appreciate it.
With this and your gun, your workshop is one scary place!
LOL Thanks... I Think LOL
Thanks for sharing your shredder ideas, keep it up!
If the saw blades are set to wobble, i.e. set at an angle on the shaft, they will shred the plastic completely
@Jeremy Fielding I know you like discussing with your "neighbours" so here's a couple of questions/ideas.
Did the plastic melt when cutting with this shredder? It's often hard to cut plastic with circular blades and keep it from melting due to the heat from the metal. I was thinking about building something like this (but on a smaller scale and a little less dangerous) and I thought about submerging the lower half of the blades in water in order to keep them cool and keep them from melting the plastic. I've heard about a guy who worked on a robot building factory and he used a similar system to cut plastic. Do you think this is a good idea?
I'm also thinking about using small angle grinder blades instead of the wood cutting ones you used - by using angle grinder blades I would reduce the risk of cutting a finger and the price would drop by a LOT since angle grinder blades go for a 1/16 of the price of wooden blades (in the place I live in, of course). It's also more convenient since you get a more compact design.
Finally, I considered a double shaft configuration but I think this would be pretty useless since it would need to be gravity fed and you already said that it didn't work in the other video. Maybe by using smaller blades and reducing the rpm it wouldn't blow the plastic out. Just a thought.
Thank you for sharing your projects and experiments. It's really cool and helpful, even when a project fails. Cheers!
The Water Idea sounds great!
Thinking about building a shredder like this
such can be useful in opening huge non segregated bags
Boss let me help you out here. When you wash out your jug if you leave just a small bit of H2O in it and place it in a microwave for 3 minutes, it will steam the label off for you and get you that much more HDPE to use.
+kevingill3339 interesting idea... I will give it a shot
Wow! Couple questions: Why are you shredding plastic? and Can you build one for me that is waterproof and washable so that I could turn all the carp I catch into fertilizer?!
I love watching your videos, but I am not in any way mechanical.
At first I thought my cybernetic enhancements were acting up, then I realized it was actually part of the video.
We're also conducting a research regarding plastic shredders and we plan to adapt your shredding unit😊. May we ask the measurement of spaces between the blades ? And the size of the blades as well
They were standard saw blades but it was years ago as an experiment... so I have forgotten most of the specs and don’t know the exact thickness / kerf of the blade I used. It varies some.
How about rotating the flat surface 45 degrees so it is more upright.
Then contain the other side to create a vertical gravity feed hopper.
Fingers well away and just keep pushing more and more into the hopper.
That is one mean machine!!! Saw blades are know for making saw dust which you complained about. What if you replaced your saw blades with gears instead? You would be able get gears as wide as the pieces of plastic you want to end up with and with no 'sawdust'. George Z
Did I complain about the dust? I think I said in one video that a neighbor had issues with the dust burning. I actually have found the dust to mesh the best. We (me and him) are using difference processes so that is part of it. I love the saw blades! They are working better than expected. I have a few more changes to make and of course a guard to protect the hands. After that it is ready for business.
That's a bit terrifying, but I guess the danger keeps you on your toes!
It will have a hopper style port and a plunger to push the plastic into the blades. This will keep all the digits safe LOL
Have you thought of pressing the bottles and so forth into bricks and then using a router bit or a jointer/planer blade to make them into plastic dust?
Wow. I hope you get the next, safer design, built quickly. I have yet to view your previous videos on this subject. Perhaps they will explain why you built this machine?
Yes and no... the previous videos will show many... many other design ideas. This was just so often requested I decided to try it. This is the first video to show this "unfinished" concept.
I was trying to come up with a way to make it more dangerous but I think you covered that very well. :-)) Thank you and be safe.
You should have seen it without the shear plate and lexan cover! That freaked me out. I had to at least cover the top. Now I can work out my push-block /plunger to move my hands away from the blade!
I can only imagine! ;-))
Cool! You used my idea. Now you just need a hopper for it.
I avoided this "concept" for quite a while because of exactly what I am dealing with now... throwing the plastic everywhere, scary fast, etc.. but after trying it, I think this can work. I can't remember your comment specifically but several people requested a "dado" style cutter. This was a popular idea, and now I finally felt it was worth trying. I am so glad I did. Thanks for suggesting it.
This is excellent I am thinking of building a shredder adapted for yard waste (composting) and this design looks absolutely perfect with the addition of a chute. I would be really interested to see a build video on it
nice but terrifying a trip to the ER for sure!
you have given me an idea for something, I'll let you know if it works out ... if you're interested.
Also, try just letting them go through into long strips and then drop them in bundles sideways for a second pass rather than in and out at altered angles.
also, also, the sides (minus the bottom, handle and neck sections) can be made into good stock material for home vacuum forming small things.
Awesome. Do you intend to try blades without that gaps, maybe a smaller diameter, too?
And hell, yeah - prototypes tend to look like that if you want to learn how stuff is working (just my opinion, yours may differ). I typically do not build stuff around safety features, building bare bones is just the first step. One can do the safety stuff when everything´s working as intended, if you still got fingers and hands attached to your wrists 3:)
I am working on that right now. But I got to make the new guard before it goes live LOL