🇪🇪 Precious Plastic Estonia
Today we have built the shredder and did a test run. A couple of things still to be tweaked, but overall we managed to get our first batch of shredded plastic.
Thanks to @davehakkens and the team for making this possible.
We would be happy to help anyone who is planning to start building the machines soon with some before-assembly advice.
December 2017 update: Shredder, Injector and 5/7 of the Extruder ready.
January 2018: Moving part of the production to Tallinn.
March 2018: The last – Compression machine almost ready.
May 2018: Started making wallclocks.
Sep – Dec 2018: Not so active season, looking for sponsorhip deals.
Estonian team: @jegor-m; @maximmm; @igor-smog; @dannydadog
Instagram /// Facebook page /// BAZAR page
I think it’s very good idea
Amazing work !!
Great work guys!
@jegor-m You could try leaving one of the ‘failures’ in one side (cut it off at the gate) and next time you inject the plastic you will get better flow and pressure into the empty cavity. I agree about the mould heating, not only does it take much longer but also wastes a lot of energy repeatedly heating and cooling the mould.
Very nice looking mould by the way!
thanks for posting the errors! I think we had 2 of these moulds and with one we increases the diameter size of the “injection shaft” to make the plastic flow in easier. Not sure which one I send 😅 But that could help? Mould heating definitely helps but is such a hassle to do every time. Also @jerzeek might have some tips on this one!
🌎Update N.22 – Mess
For those of you who wanted to see how messy our garage is – this is ‘relatively clean’ state. Not much can be otherwise said apart from that we’re building a custom compression machine, photos soon to follow.
*panoramic photo stiched by a trial version of Autopano Giga. Quite a good software, in case anyone asks.
What’s happening here… winter sleep?
Much love from the south 👹
Haha this story is awesome !!!
You are crazy to accept an order of 500 pieces but really good move and exempl. Thing if know i have the same i make the same choice becaus you made it !
Hey and just for jokking, badg is not a small thing ? Heart about something like we don’t do small object with P.P. 😉
Cheers form switzerland
waaw looks pretty nice ! Could we visit? 🙂
Like always awesome!
General practice is to avoid mixing various types of plastic in one item as it makes it unrecyclable and cannot guarantee item’s structural integrity. It might just fall apart as the bits won’t stick to each other.
Smoothness is mostly controlled in the fabrication process itself through setting the right temperature; having a smooth mould etc.
The first step is to separate the plastic. By product type first, then with some research by material type as well.
Also don’t forget there is so much information here on the forum, look something up.
Good luck with your recycling!
Wow!!! I would love to start this where I’m living. My idea was to collect plastics that have washed up on the beach but after reading realize certain plastics melt together more smoothly than others. Gosh where do I even begin?
Nice work, I like your documentation.
🌎Update N.17 (1/2) – PP Coasters
Over the last couple of weeks we have been testing the injection machine. For that we made two metal moulds and one acrylic mould (plexiglass).
What you need to know is that the ambient temp. in our garage is about 0°C.
The first photo shows the coasters we got.
Pictures 2 and 3 show the first try using metal moulds. Temperature set for a bit over 200°C. This is mostly due to the fact that it cools down quite fast in such a cold air.
Result – pretty nice coasters with minimum post processing / finishing up.
What could be done better? – wait more time to get uniform melt – better surface.
Pictures 4 and 5 show a second attempt. Process temperature was lowered.
Result – as you can see both of the coasters are not finished. This is mainly due to the fact that the mold is cold and plastic cools down and solidifies before reaching the furthest wall. Before you say it, we actually wanted to put the injection point to the side, to get plastic to flow in weird shapes and colours. The smaller coaster, if it can be called a coaster, has dark lines. This is because of the leftovers after the previous batch (pic 2 and 3)
What could be done better? – Faster injection; Longer wait;
Also a good idea is to add an indicator hole, that would show that the mould is full and it is time to stop pressing.
*acrylic mould has not been tested properly yet.
And you have pictures?
low-density polyethylene is typically 105 to 115 °C
I think this info exist in an other post, about plastic materials in the forums.
Here is one: https://davehakkens.nl/community/forums/topic/types-of-plastic/
Sorry jegor-m for hijacking your post :S
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