I 3D Printed a SHREDDER and this happened... 

I respect that he shows it in action and doesn't cut off right before it happens and talks 20 minutes of BS before he finally shows it uncut. +respect

More details about the CAD process would make this twice as interesting. More actually. We've all hammered together and partly broken poorly toleranced parts, but describing the design process that ends up with a well manufactured product would be invaluable! Love your videos

The small gaps are probably from the pieces deforming from the hammer head strikes. You should use a striking plate between the piece and the hammer to spread the force as much as possible.

I've thought about this (a 3D printed PLA shredder) several times and always kind of blew it off as ridiculous, but this video turned me around. I wouldn't mind seeing this fleshed out with a sturdier gear box and perhaps metal teeth inserts. As it is, I'm very impressed. Excellent work.

It hurts seeing how you hammer those blades on tube. You should have put gear on the wise and hammered tube through some wood. It insures nothing is skewed and you do not damage any surfaces.

CRAZY!!, I LOVE it. Your dedication is amazing, keep it up.

Also, the speed of both rotors should be different, so it just does not fly through. It should solve the problem of not really shredding the sturdier parts.

Nice! What about adding metal blades to the shredding wheels? It would still be mostly 3D printed and get closer to the results you want.

Sweet animation Mate! I know how long that takes (I'm learning with my son). I really love seeing what you come up with using your printers and brain, awesome work. 👍

"Most interesting thing I have ever made" "...Dad?"

I put the plastic on to stop lube from flinging. I left the shredder open to not prevent the debris from flinging as it fell, badly, into a cardboard box on my floor. Hell yeah my guy 👍

A splash guard is indicated. Than more teeth for shredder discs and if you can metal insert plates as cutting edges for less wear. And metal gears and at least 80% infill for the gearbox housing.

NGL, I was grinning ear to ear watching this. You, my friend, earned my sub.

Old steel brake rotors typically just get thrown in the trash but they could probably be cut into shredder discs using a plasma torch. Get an old gas powered wood chipper or lawn mower engine to power it and you can make a shredder out of mostly trashed items.

Great project! Thanks for sharing!

Apple 1: *“I'm not ready to die!”* Apple 2: (dead) Apple 1: *“Nooooo! Wait bro, I'm coming!”* (jumps)

nice shredder, cool idea!

pro tip: put the aluminum square tubes in the freezer for a couple hours so they shrink just a little bit, it'll make it easier to get the shredder wheels on. and like other commenters have said, put something between the hammer and the printed parts to better distribute the force, or use a rubber mallet if you have one.

Using these for aluminium casting would be a great start to getting some real shredder performance

Really cool concept. 👍

🤣"Dry aged cheese burger" you made my day!

I'm quite interested in how this would work with shreding fabric, especially would it still work if the shredder teeth were more fine. I definitely did not think those plastic teeth would hold out at first, very impressive.

Very interesting project. Out of curiosity did you scale down a larger unit or just eyeball the aspect ratio of drum to tooth length on the shredder drums? Seems like longer teeth may help. I may have to build one at some point.

Would be interesting to see how different shredder materials perform, like carbon fibre filled nylon or polycarbonate. Also it would be cool to see you integrate metal somehow, perhaps via lost PLA casting or something. Or do the carbonfilled nylon and then electroplate it with the hardest metal you can find lol. Perhaps make composite grinding teeth, just a carbonfibre filled nylon shell, filled with concrete (to be cheap) or some other cheap high compressive strength material and then electroplate it with the hardest material you can find lol.

If you didn't tap the burger, you'd never know it wasn't made 10 minutes ago. Scary.

I'm sure someone else has covered this, But the reason your shredder won't shred, is the gaps between cutting surfaces. the opposing teeth should almost touch as they pass one another, and the gap from one rotating assembly to the other should be very small as well. The only thing you cannot currently account for is material weaknesses and flex. if you drop a hard object in, does it open the gap between both cut heads. your aluminum core is great but it doesn't stop the frame from allowing movement. Improvements to this design could be making the frame from extruded aluminum like your 3d printers are made from, printing your gears from a harder material, or have PCB way make them. Either way, fantastic video. I would hope you will revisit your designs with improvements in the future.

Cool project. Worked better than I would have expected.

First video iv seen form you I love it, do you think if you had pcbway make you those parts in metal it would shred pla no issues? And how small would the pieces be like could you make a 3d print recycler out of it?

Greatly appreciate your ideas and videos! Thank you!

Have you thought of using cast aluminum? Here on youtube, myfordboy has some really decent videos on using 3D printed parts and casting them in molten aluminum. The gears would likely need to be made of aluminum bronze for the increased wear resistance and strength, but the shredding teeth themselves could probably be made of cast aluminum and survive fairly well. Maybe then you could shred aluminum beverage cans, PET plastic bottles, etc.

Love these projects.

Rebrand this as a compost shredder, and you solve the issue of it not being able to shred hard things! Great project!

You have inspired me to get into the hobby. I ordered an adventure 3 pro last night. It’s a cheap budget machine but I’m looking forward to getting into this and I hope to maybe evolve into designing and doing projects like this. Good work!

It's always fun seeing PLA do some work!

Awesome work! Just wondering, did you think about using machinist inserts that could be screwed onto the faces of the cutting blades?

very amazing. Good Job.

I don’t need one, but want one! Very honest video. I like your style 👍🏻

when i was little i was obsessed with shredders and always wanted to 3d print one, this video is kinda a dream come true for me.

Fantastic work, dude! Really well done! 😃 My mother does compost... It would work great for her! Anyway, stay safe there with your family! 🖖😊

This is so cool !! Also what are your slicer settings??

You've heard of The Salad Shooter well now we have The Salad Shredder. You should try throwing some carrots, radishes and other veggies in there and see if you can chop up an entire family size salad in minutes.

The reason the flat plastic isn't damaged much is not because of the power it's because of how wide the gap between the rollers is

Dude he could just change the shredders design to put indexable inserts into it. I am pretty sure it would work very good

Ender 3 s1 pro vs ender 3 v2 2021 FDM WHICH IS Better??

..a really interesting and fun way of learning mechanics.... and teach it to others perhapaps, i guss many kids will love this... suggestions: sychronisation and locking of the shedder axis to limit movement the teeths can be made of thin strips(teet width) of metal that is shaped to fit (it is the part that trasfere the initial force) drive both shredders simulanesly...not just one (to balance force and reduce wear signifficantly) the gaps btween the induvidual shredders are faar to wide the shedders do not need to fit as snuggly to the square aluminum bar as long as they can be locked and pushed together (u can easily do this by two parts screwed into eachother, when screwed out thay puch the parts together) the base dont need to be as snuggly fitting to the shedders axis (thers no grinding here...its just for holding what ever u shredd in the shredder) ..ps.the reason the plasic wheels take so much damage is because they experiance a force from on point...doubble gears on opposite side of the gear will reduce it...but it also make the gear system more complex... ex X-O-X (where both X are driving the O axis...spreading forces over two poins 180 deg from eachother..for even smother leveling, 3-gears 120 deg apart..

I think you're a madman and I love it.

Perhaps consider a two stage shredder (2nd assembly underneath) with a different tooth pitch to achieve finer results.. Im curious as to what infill you used to get this done..

Great project...I liked the way it took 'bites' out of those apples. The tooth depth is just simply shallow enough, that it did not exceed the elastic limit of those fine sheets of plastic. they are just too flexible, to be broken with that little tooth depth. I agree, the transmission needs a little refinement, but, This would be perfect for making salads, it shreds lettuce and cabbage absolutely perfectly. I don't know if ABS and PLA are considered "food grade" or not.

Any chance of you sharing the stl files for the prints?

What battery did you use?

i like it. have you consider making a foundry for aluminium and use it with the 3d printed gears?

Just a question, I have no idea how shredders work but from technical point of view - shouldnt the gap between the teeth of the shredder be as small as possible? Aint the purpose of overlapping teeth to also cut like scissors? Maybe making them so close to nearly touch - would help to also tear the plastic plates to pieces

It looks like a great salad shredder. You just need to add a wood or cardboard shoot on top so the items stay in there the entire time instead of flying out. It would be cool if you put some sort of metal on the tips of the blades. Maybe something like a razor blade or some other cheap metal part attached at the blade tips. Good job. It may have slid on easier if you sanded the inside just a tiny bit, especially the corners and definitely use lubrication. Great build. I enjoyed the video.

Amazing project, just wondering if this can shred failed prints. I am having plenty og failed prints in my printer. Planning to recycle them.

Have you ever tried doing a heat/freeze fit for tight tolerances parts?

I love how you put a cover over your gearbox to keep a little debris and lube from flying off, then proceed to shred your groceries all over the floor. Lmao

How did you make animation

Great design! I designed a shredder like from this but just smaller. I made a few videos on it but I’m still working on finishing the build video

It's good to have a joke. Means you have a sense of humour.

a perfect compost bin shredder.. will saves weeks of natural breakdown

perfect kitchen mashine

Very good. Maybe a close loop control system will improve the efficiency, by running the motor in low speed but increasing tork when needed (but is much more complicated system, needs calibration, sensors, ...)

what is your gear settings?

"From now on, I am running this machine on MAX power"!!! Question: WTF didn't you do that from the start? MAXIMUM destruction brother, yeah!

A new twist on a food processor. A problem with a typical food processor is that if you let it run too long, the contents become overly shredded, and you can easilly turn your onions to sludge instead of shredded onion. Your shredder does a pass, ONCE. If you put fine adjustment on your shredder, you might have a deterministic food processor where the first item through is the same as the last. Perfect sizing. Its like you are on the cusp of a new food processing machine.

Make a sacrificial piece to hammer on. Preferably from wood.

If only we can just go and buy uranium profiles

love the non-traditional cider pressing

I think the teeth need to pass each other further. The flat round radius next to the teeth radius could be smaller and the teeth radius bigger. I think that's how the big metal ones work so well, also a much slower gear ratio would help a lot with torque and grab opertunity too in my opinion. Too much speed means a lot more strife on the gears if it does jam. I love projects like this. Thanks!

I would sacrifice the counter space just for the lettuce-cutting abilities. Good stuff.

Hello! What about your tank on 3d printer?) Thanks for the video.

I want to make one!!! Will it shrewd silicon rubber?

brilliant !! Sooo .. it will shred a finger to the bone and then stop?

"Why did you use ABS?" - "I ran out of blue PLA". Yup, that sounds like 3D-printed-pumps guy xD I'm also kinda surprised that you didn't use your modular planetary gearbox for this setup. As far as it demonstrated in the other videos, would it probably not have had those issues.

me at the beginning of the video: aw that's a cute toy me at minute 8: THAT IS NOT A TOY

Will it grind up failed prints?

Hmm. Feeding Letuce to a paper shredder. Genious

How long is the aluminium profile

I would heat the aluminium bar just enough for the blade plastic to melt a little bit when inserting them. I would do one blade a the time and when all of them fit well, I let cool the aluminium before inserting all of them.

best lettuce shredder ever

coolest 3D printed salad maker EVAH!! P=

How viable would it be to make a shreader that can sit on top of a standard UK wheelie bin, that can shread cardboard and plastic bottles? Because I always have problems with fitting all the cardboard in my bin as I just don't seem to be good enough at tearing things down.. I think I am doing good, but then STILL run out of space.. so if something can shread like this... It seems like problems would be solved.

Wolfgang Puck's restaurant business is probably not doing so well.

Sweet! Hey, how about a toroidal impeller?

Love this

EXELENTE AMIGO....DONDE CONSIGO LOS ARCHIVOS STL...GRACIAS...SALUDOS DESDE TABASCO,MEXICO

Very nice project well done! There is a very clever chemistry hack that transmutes the plastic. If you coat the teeth with super glue and fixer spray, the plastic becomes super strong! And if it can then shred plastic, this machine can save a fortune!

Mc Donald's dry aged cheeseburger :-D that made my day haha!

It is useless as an actual shredder, but on a larger scale or just bigger input funnel, it would make a marvelous grape crusher.

Have you thought about adding metal (carbide or something) tips to the teeth of the shredder. They can be replaced and reduce wear of the shredder parts. you could use just some metal squares screwed into the pla where the teeth would impact that way the metal would take most of the abuse, and as previously stated, could be replaced.

Will be a good addition to next year apple juice pressing process :D

I've been wanting to do this for quite some time, except I plan on casting all these parts in metal.

1:21 all about that drip 10:50 herring bone gears could remedy the slipping

Awesome.. think you nailed the gear reduction. Now instead of will it leak, you can be will it cabbage?

Do you have shareable plans for this?

If I made this shredder, I would use it for Old food like you are as a demonstration. For me I would use it To get rid of old food and throw the shredded bits in a composter.

Once you have the power transfer issue solved you will run into the problem of the cutters wearing quickly. In order for the cutters to last and cut well they need to be made from a harder material than what is being cut. When I was working in the recycling industry the cutters on our grinders were made of hardened tool steel with tungsten carbide cutting edges welded to the cutter ends. Those were used to cut aluminum and plastic, but were capable of cutting light gauge steel if necessary. I think that a decent solution that would allow the cutters to be 3-d printed would be to electroplate the cutters in nickel. That would provide enough surface hardness to keep the cutters from wearing when shredding plastics. You will need to adjust clearances to allow for the thickness of the electroplate.

I know that aluminum scrap shredders have the knives spin at different speeds to increase shredding action. Maybe this would help for version 2?

I've always wanted a small shredder for cardboard and styrofoam to put in recycling.

dude i love it