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V4 All about sheets – Index topic

Mark Bachrach markbertbach

V4 All about sheets – Index topic

27/11/2018 at 13:56

Hey Everyone, its the sheetpress team here.
So throughout the year of V4 development we have built several dramatically different versions of the sheet pressing system, experimented with several ways of processing sheets and made a range of products from them.
At the start of the year we had two conceptually different systems.
1. A hot press + molud frame
2. An oven + a cold press + molds
Before V4 we made a prototype which provided a foundation for what we later went on to develop as the V4 sheetpress that is included in the V4 release download kit. The development of the final system can be found here. At the beginning of V4 we made the decision to go the path of the oven and the cold press as we believed it would be more energy and time efficient. The development of each part of the system can be seen here:
Cold Press(Pre V4)

After user testing we decided that this version was too complex to build and maintain, too difficult to operate and too slow which lead us to go back to the hotpress system.

Product Design: In parallel with the development of the machines we also developed products made from sheets:http://onearmy.world/community/forums/topic/v4-sheets-interesting-results/
Details of our research how to process sheets can be found here:http://onearmy.world/community/forums/topic/v4-sheets-joinery/

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06/02/2019 at 21:07

Not exactly sure if it is the same as thermoforming or not, but vacuum forming is very easy to do (assuming we can produce thin enough sheets of plastic), so that may be good to pursue.

06/02/2019 at 21:10

Another Idea of mine was to take the thicker sheets produced by the sheet press, and let them “simmer” on a large griddle to alow them to heat treat (for more strength + transparency) and for the sheet to be thinner.

18/02/2019 at 09:45


Good ideas, although I’m a bit sceptical towards both.

fot thermo forming I think you need a very consistant output and thus very pure input material without any pollutions.

for simmering I worry about warpage and thickness deviations.

but for both, only 1 way to find out! 😁

I you try so, let me know, otherwise, maybe @v-varella would like to try

26/02/2019 at 17:27

Hi Mark,

Lovin the sheetpress you made!

This got me wondering if there is a list available to reproduce the SheetPress ?

For instance These;

02/05/2019 at 19:31

Hey everyone! Six months in and we have our first working prototype of the sheet pressing system up and running! Below is a presentation which highlights the journey so far and a video of the process so you guys can give us some feedback!

02/05/2019 at 23:57

congratulations, that looks like a promising setup, for around 2-4k; next station would be then blow molding though 🙂

05/05/2019 at 18:23

Well done guys! I can’t wait to start making sheets, going to be nice to see what comes with v4!

30/05/2019 at 18:48

@markbertbach I just came across your thesis work in the other thread http://onearmy.world/community/forums/topic/plastic-plate-press-semi-diy-semi-professional/ . Maybe you should add it to your index, perhaps as background information. It really is a valuable resource and should be visible.

Thanks for the great work

11/06/2019 at 17:18

Nicely done,

This could be a really valuable part of the Precious plastic toolkit. It opens lots of doors.

Is there a development timeline somewhere for this / V4 in general? Or an informal estimate on when this might be available and the cost to make it.


29/06/2019 at 09:58

@martink, a short look at the oven drawings; i’d say 2 skilled metal workers can do it in 10 – 20 days, assuming CNC or at least guided hand plasma cutter or metal brake machine, in top of the normal tools, 20-30 sqm space;  less than that, eg: alone & not all tools : 1-2 months. transport in EU easily in thousands (2*2*2m). if you would build this your self, possibly 2000 – 4000 Euro. that’s just the oven and the estimate is a for 1:1 copy. there are quite some shortcuts you can do but I guess most the parts have to be there or at least done like that. Evtl. this goes much cheaper in bulk from a laser service …

18/12/2019 at 20:08

Hey everyone for further questions about the V4 development of the Sheetpress, you can post below here (best option so everyone can benefit from our discussion), inbox me here or reach us on discord https://discordapp.com/invite/AKuxkpx

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