Building a 3D Printer, RepRap Mendel Prusa2 by craynerd

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shipto:
good stuff your printer is producing I looked at these ages ago but didnt think them capable of such work.
although the filaments are expensive from what I have seen what we need is a machine to extrude filaments from old plastic bottles etc. even better just make something to chew them into tiny grain and feed that from a little hopper.
come on modders we can make the reprap cheaper to run if we put our minds to it :coffee:

machineshed:
sounds like a challenge! :dremel: :dremel: :dremel:

DMIOM:

--- Quote from: shipto on June 16, 2012, 07:12:23 PM ---good stuff your printer is producing I looked at these ages ago but didnt think them capable of such work.
although the filaments are expensive from what I have seen what we need is a machine to extrude filaments from old plastic bottles etc. even better just make something to chew them into tiny grain and feed that from a little hopper.
come on modders we can make the reprap cheaper to run if we put our minds to it :coffee:

--- End quote ---

Problem I would forsee is that any such intrinsically non-homogenous material wouldn't have one melting point, would have variable adhesion/cohesion, would have different viscosities, and would extrude at different rates (and I hate to think what might happen if there was a Gold Top foil label left in there :zap: )

Only way this might be a go'er is if you either made a lot of components yourself you had to scrap, or you bought material of guaranteed quality (off-topic : Ade - have you managed to get the wicks out of all that 100kg of candles you bought yet? :coffee: ).

Nevertheless - here's a start - the Schred which can get as far as making sheet material. Now I also seem to recall someone on. I think, the Model Engineer site, who was building a replica of the aluminium extruding plant he had previous worked at .....

Dave

shipto:
what about something like http://news.thomasnet.com/fullstory/Plastics-Extruder-suits-product-development-applications-21881

matnewsholme:
Chris

couple of questions. Did you manage to find a set of build instructions specific to prusa iteration 2?. Every set I can find show two plates for y axis whereas iteration 2 and yours only use upper plate and mount belts to lower side of it. Also what thickness did you use for this plate? I'm thinking 9mm MDF but maybe 12mm would be better?.

Cheers

Matt

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