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starter
29/07/2019 at 16:14
0

This engine is 2600W but with a working time of 60%. The shaft speed is 40 RPM. I put 2 groves SPA pulley with 100mm diameter.

But I think i quite too slow now, I still block on bottle head…
for now, I will keep it like that, I will do some cosmetic/safety add like a desk and improuve cooling of the motor, and start to work on other machines (injection ;-))

starter
29/07/2019 at 16:08
1

An other set of pictures :

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starter
29/07/2019 at 16:07
0

Hello everyone,
Sorry for been off for so long. I was busy at the office.
I have found a new engine, somebody had a broken branch schredder (the blades were missing) for 10€, it wasn’t risky, after striping it to the bear engine, it seams that I could not connect the shredder and the new engine directly, so I ordered some pulley to connect them.
Here are some picture I take along the project :

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starter
04/06/2019 at 10:41
2

@donald,
I’ve read the post to quickly, @imuh, it’s sure that additive component to plastic are a nightmare to recycle them, but I think PET bottle have no additive as they still are clear transparent and it’s written 100% recyclable on the label…

For the vacuum forming machine, it’s a great idea, I’ve seen a lot of youtube video on how to build one but each lime they use brand new material from the store, I haven’t thought of using plastic bottle as vacuum forming material…

Great topic to follow. Thanks

starter
04/06/2019 at 10:09
1

@msnmck, It seams than US compressor are differently build than french ones, in my case, smalls compressor for home use are in single phase 230V but have very small engine, like 1/2HP and professional compressor are mostly on tri phased current. I have one small and one big semi pro one and it’s what they are…
For the cable, it seams inevitable that you had to cut them at one place, some knowledge of electricity connection is a must when you do DIY projects.
For my PET sourcing, I drink a lot of water in bottle myself and I started to talk about my project around me so they give me their too. The solution I have found so far is using tin snaps to cut the lid off and slice the bottle in half to remove the bottom part, i will do some pictures at noon.
I want to use first injection molds to recycle plastic and I hope that PET will be compatible with it…

@imuh, I am a bit lost, on PP poster it says that PET is melting around 280°C, are you sure of that?

though PET is the polymer which requires the highest temperature to melt, it’s stil more than feasable with a regular oven (you need around 200°

I am aware that working with virgin product is easier and more forgiving but my goal is to recycle so I will not buy raw material to experiment with…
But thanks for the links and the informations.

@donald,

I would like to test a combination of a bottle cutter and thread cutter to create pet flakes, instead of directly shredding them.

I had the same kind of idea, right now I’m doing it manualy with a tin snap but I was thinking of putting a boxcutter blade on a jig and remove the lid and bottom more efficiently. I have try to flatten them out with a hammer but the thickness problem is still there for me.
I would love to see someone do a test with freeze bottles, we could ask The King Of Random to try that for us^^

starter
03/06/2019 at 14:27
1

Hello @imuh,

Bienvenu!

We should keep the English to let the other read this more easily ^^.

Thanks for the sourcing, I’m on leboncoin.fr everyday looking for big motor with reducer and I never thing of searching a shredder…
I will investigate that way in case of mine do not work with other plastics.

Thanks mate

starter
03/06/2019 at 10:09
2

@s2019, I will do some test on different material and thickness this weekend, I will post it there next week I think.

Looking to the PP melting temperature poster, PET seams to be the highest melting temperature…
I will see if I can switch to an other material after my testings.

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starter
02/06/2019 at 13:52
2

Hello every one, thanks for the interest in my topic.
@msnmck, Glad you start your project too, I think you are talking about a triphased engine from an air compressor, I want to have a monophased engine to be able to shred every were, here in France we are a very view to have triphased curent… but I will look there to see what I can get.
@s2019, I want to keep it cheap, for now, it only cost me the shredder and a new chain, everything else is leftover or garbage things. I had the idea of the flywheel with and old motorbike wheel but I wasn’t sure how to use it… Theoretically it could help the engine to overpass the torque of a big chunk of plastic…
@donald, I re-upload the picture, thanks for the info, on my phone, it was ok…. I started to shred thing I had around and PET water bottle are everywhere, it works with them only if i cut the lid and the bottom off and cut them in half to have only one layer…. pretty complicated pre-shredding phase.
I had try with a detergent bottle that seams to be HDPE and it works well, I will try to find other material and thickness before changing the engine or anyting else.

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