tag:blogger.com,1999:blog-23681518.post7181765951751494843..comments2023-10-14T04:05:08.546-07:00Comments on Diary of a Technocratic Anarchist: Killing flocks of birds with one stoneForrest Higgshttp://www.blogger.com/profile/17208965471464716174noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-23681518.post-68153435862813439552013-03-25T13:42:18.441-07:002013-03-25T13:42:18.441-07:00Angel: You print ABS on an acrylic print bed, HDP...Angel: You print ABS on an acrylic print bed, HDPE on a polypropylene print bed and polypropylene on an HDPE print bed. :-)Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-61294637385458936102013-03-25T11:03:47.797-07:002013-03-25T11:03:47.797-07:00My question is: Hod do you get to stick the HDPE o...My question is: Hod do you get to stick the HDPE on the bed? Do you have a post indicating this challenges? I tried to print with HDPE with no success at all...Anonymoushttps://www.blogger.com/profile/12994325485757818886noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-83700954062101940432009-12-25T11:33:59.568-08:002009-12-25T11:33:59.568-08:00Great news, just how difficult do you think it wou...Great news, just how difficult do you think it would be to go from (supposedly clean) plastic powder to 3mm filament?<br /><br />also if you, for instance, put the belt sander vertically and then feed the plastic diagonally from above<br /><br /> ... pour granules here!<br />/O\ / /<br />| | /./<br />| |/./<br />| |./<br />| |/<br />| |powder comes here<br />\O/<br /><br />wonder if small granules would get stuck or sneak through without being grinded? adding a shaking sieve might solve that or one could leave it to the winnowing?<br /><br />When using new feedstock (as opposed to recycling) would it be necessary to melt the granules into larger objects? like a long stick to feed into the hopper?solsken i synhttps://www.blogger.com/profile/06804627960441432279noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-57412168724550450952009-12-07T08:53:32.950-08:002009-12-07T08:53:32.950-08:00In this case the winnowing could be accomplished a...In this case the winnowing could be accomplished as in a popcorn air popper. Blow the plastic-grit mix up a length of piping long enough relative to the air volume and speed to allow the grit to drop out to the bottom.Anonymoushttps://www.blogger.com/profile/16329535244663868250noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-50869960832813020742009-12-06T16:10:27.345-08:002009-12-06T16:10:27.345-08:00>Now we need to figure out how to print a belt ...>Now we need to figure out how to print a belt sander ;)<br /><br />The folks at Factor e Farm would probably be willing to collaborate.<br /><br />>I was thinking of winnowing, actually.<br /><br />Cool! Speaking of farm tech, here are <a href="http://www.google.com/url?sa=t&source=web&ct=res&cd=11&ved=0CC4QFjAK&url=http%3A%2F%2Fwww.savingourseed.org%2Fpdf%2Felectric_winnower.pdf&ei=Z0ccS7-_FYqosgOgno33Bw&usg=AFQjCNEbA-bKswDGgP8nu1mNWDk4W7t-Tw&sig2=yxRHvmHAuOmNOfPKqSNV7Q" rel="nofollow">plans </a> for a basic winnowing machine...looks like a cinch to replicate, although the air impeller may be a little bit fiddly if you want to buy a bare motor rather than a blower.Joelhttps://www.blogger.com/profile/16755460714090772432noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-86023300815696785002009-12-05T19:27:16.562-08:002009-12-05T19:27:16.562-08:00I don't like the notion of going directly from...I don't like the notion of going directly from powder to print. I intend that we make 3 mm filament as a common feed stock.Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-45026773881428516502009-12-05T18:42:09.136-08:002009-12-05T18:42:09.136-08:00Now we need to figure out how to print a belt sand...Now we need to figure out how to print a belt sander ;)<br /><br />Great work though. How hard is it to modify the current rapman or mendel extruder to take a hopper of plastic powder?Unknownhttps://www.blogger.com/profile/08028070843345511584noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-10548072043084661222009-12-05T18:01:55.632-08:002009-12-05T18:01:55.632-08:00I was thinking of winnowing, actually. That's...I was thinking of winnowing, actually. That's how you usually deal with two different materials that have notably different densities.Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-80282294062750436342009-12-05T16:34:05.173-08:002009-12-05T16:34:05.173-08:00Hmmmm... density of plastic relative to water? Den...Hmmmm... density of plastic relative to water? Density of grit? (most likely alumina or quartz) Should rinse out good, dry in an old food drier or cheese-cloth sack. Or do like a farmer and winnow the grit out.Guyhttps://www.blogger.com/profile/12623342498696677919noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-91356959518202437992009-12-05T15:24:11.830-08:002009-12-05T15:24:11.830-08:00Good point. I'll have to think about that.Good point. I'll have to think about that.Forrest Higgshttps://www.blogger.com/profile/17208965471464716174noreply@blogger.comtag:blogger.com,1999:blog-23681518.post-49652961360599899102009-12-05T15:20:03.350-08:002009-12-05T15:20:03.350-08:00Belts like this tend to throw off a lot of abrasiv...Belts like this tend to throw off a lot of abrasive particles.<br />Do you think the extruder will get damaged from the abrasives?Josh Kopelhttps://www.blogger.com/profile/16203055108558568522noreply@blogger.com