Andrew, It is hand powered. Though a motor could easily be attached to it. On the note touched upon by Omar, why don't we simply build everything we possibly can and cut costs. The grinder could be made out of a re-purposed meat grinder, quite possibly with some modifications to the cutter wheel (depending upon the style and efficiency). The extruder could even be made DIY, but the only mechanism I see as a tricky one (per my idea) is the metal screw to carry the plastic pellets into the heating core, injection molding style. Though I would bet Devin could give some expertise into how to machine such a piece.
To touch on detail, I was thinking the intruder would essentially have a hopper for the pellets. Said hopper would then feed down into a concaved screw in a shaft, wrapped with a heater core. This shaft would carry the pellets through, melting them to liquid, then force them into a chamber of the appropriate dimensions where the plastic cools and hardens as a "wire". After running through the cooling chamber, it is spooled up on an automated spooler, turning relative to the carrier screw. Generally in the style of the proposed Filastruder. These steps allow for the focus to be on Torrie's proposed improvements and allows for the 3D printer area to be improved as well. If I find some time I can poke around Hazel St. Recycling for anything that would work for the needs or quite possibly be lucky enough to run across injection molding parts? Does anyone have any thoughts or contributions to the ideas or construction? On Mon, Mar 31, 2014 at 1:58 AM, Andrew Buczko <a4s...@dsprototyping.com>wrote: > Yes yes yes! I have seen that grinder before and want it. > > One question, do we need to by a motor for that grinder or does it come > with one? > > > On Sun, Mar 30, 2014 at 4:49 PM, Torrie Fischer > <tdfisc...@hackerbots.net>wrote: > >> On Sunday, March 30, 2014 13:06:59 Omar Rassi wrote: >> > The Idea: >> > >> > The grant from the Knight Foundation was given to help advance our >> > charitable activities. The 3D printer has been available for public use >> > since we got it and there is much more that we can do to improve the >> > experience and enhance guest visits. >> > >> > What is needed? >> > >> > Currently there are some minor deficiencies with the Prusa as it is >> right >> > now. >> > >> > >> > - Lack of a stable fan. >> > - Can be resolved by printing an appropriate mount for the tiny >> fan >> > we have now and making it a permanent fixture. >> > - Lack of variable filament types. >> > - Easily resolved by asking our contacts from the last >> acquisition of >> > filament for different types of filament. >> > - A plastic portion of the nozzle assembly is cracked (I think its >> the >> > carriage assembly). >> > - Can be resolved by printing a new carriage assembly from >> stronger >> > filament material. >> > - The current software in use is not stable and the settings from the >> > Mac Mini that was in use before have not been imported. >> > - I will resolve this by the end April by exporting the settings >> from >> > the Mini, burning the file to CD and placing it at the 3D printer >> cart >> > (someone more familiar with repetier host can import those >> > settings, I am a >> > 3D printer n00b). >> > - I will also dual boot Windows and Fedora on the computer with a >> > shared exFat partition to store the 3D printer software >> > settings, this way >> > both OSes can share the same settings. >> > >> > What is wanted? >> > >> > I would like to add a grinder to and filament extruder so that bad >> prints >> > can get quickly recycled. I found the filastruder >> > kit<http://www.filastruder.com/products/filastruder-kit> $300 >> > and the filabot <http://www.filabot.com/> $900. The filabot is more >> > expensive but it comes completed and seems like it could be sturdier in >> the >> > long run. The filastruder is much less expensive but it is a DIY kit >> which >> > is not exactly a downside for us :) and looks more vulnerable to >> accidental >> > damage. >> > >> > The filament extruder takes pellets, not pieces, so bad prints need to >> be >> > ground up. I found a plastic grinder by >> > filabot< >> http://www.filabot.com/collections/filabot-core/filabot-reclaimer> >> > costing >> > $450. >> > >> > Lastly, adding a 3D scanner would allow people to bring in their own >> things >> > and make a 3D model of it. Then edits can made, it can be enlarged, >> shrunk, >> > altered, or just copied in plastic monocolor glory. Here is Makerbot's >> > digitizer <http://store.makerbot.com/digitizer> for $800. >> > >> > These additions to the 3D printer would cost between $1,550 to $2,150. >> That >> > is %10.3 to %14.3 of the grant. >> >> Sounds good to me! >> >> > >> > How does this benefit the space? >> > >> > Since we got the 3D printer, every day that I have spent more than a few >> > hours at Synhak during regular open hours, someone has come by saying, >> "I >> > heard you guys have a 3D printer." Its a very popular concept that is >> > making news everywhere that one is set up. Synhak's printer has become a >> > centerpiece to our space that gets a lot of attention whenever people >> > visit. Sort of a "come for the 3D printer, stay for all the other >> > possibilities" thing. By increasing its abilities, hackers can enjoy >> more >> > prototyping options, and will generate greater interest for Synhak and >> the >> > hacking community. The improvements will also stand as a small example >> of >> > what can be done with more grant funding. >> > >> > I invite discussion on this idea, please suggest changes, negatives, >> > positives, thoughts. I am only one person with limited time so if anyone >> > knows of other options or alternatives to what I listed, please suggest >> it! >> > >> > Thank you, >> > >> > Omar >> >> _______________________________________________ >> Discuss mailing list >> Discuss@synhak.org >> https://synhak.org/mailman/listinfo/discuss >> >> > > _______________________________________________ > Discuss mailing list > Discuss@synhak.org > https://synhak.org/mailman/listinfo/discuss > -- Sincerely, Tomm Smith God bless
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