tag:blogger.com,1999:blog-4339813531032979196.post6078244763281942645..comments2024-02-28T07:32:59.864+00:00Comments on HydraRaptor: Cutting cornersnopheadhttp://www.blogger.com/profile/12801535866788103677noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4339813531032979196.post-377298895587731692007-12-29T01:00:00.000+00:002007-12-29T01:00:00.000+00:00PCL and PLA are the two plastics RepRap are concen...PCL and PLA are the two plastics RepRap are concentrating on.<BR/><BR/>PCL is polycaprolactone, which is the same as CAPA and PolyMorph. The advantage is low melting point so possibly less shrinking when it cools but I haven't seen any figures. PLA is polylactic acid which theoretically can be made at home from starch crops but it doesn't look easy.<BR/><BR/>When I have exhausted software solutions for HDPE I may try a hotplate. If we find a way of recycling HDPE then there is the opportunity to add things which can reduce the shrinkage. Many things to try! Hopefully more people will have working machines soon so the research will accelerate.nopheadhttps://www.blogger.com/profile/12801535866788103677noreply@blogger.comtag:blogger.com,1999:blog-4339813531032979196.post-11490697897318533502007-12-28T22:32:00.000+00:002007-12-28T22:32:00.000+00:00Your work is really amazing. I always hoped, you c...Your work is really amazing. I always hoped, you can use the HDPE material, because its really widely available, and cheap. And it looks like you are more and more closer.<BR/><BR/>I would prefer heating the extruding object over using an yet another hardly available material. (I don't know CAPA, and the others mentioned. But almost every plastic bottle are PP and HDPE (mostly the cleaning stuffs))<BR/><BR/>Did you consider heating the extruded object? (with a simple resistor, or with a infra lamp, or whatever). ?<BR/><BR/>You are so close, that maybe just a bit heating would be enough.<BR/><BR/>Enough of me;) Keep up the good work!<BR/>I'm constantly checking your site for updates. Keep us posting please!<BR/><BR/>And please stick with HDPE....<BR/>Best regards, <BR/> KhiralyAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-4339813531032979196.post-66053758644375588792007-12-28T11:14:00.000+00:002007-12-28T11:14:00.000+00:00Thanks for the encouragement. My aim is to get HDP...Thanks for the encouragement. My aim is to get HDPE accurate enough to make Darwin parts but that might not be possible. I will keep working on it though until a supply of PCL or PLA filament becomes avilable.nopheadhttps://www.blogger.com/profile/12801535866788103677noreply@blogger.comtag:blogger.com,1999:blog-4339813531032979196.post-90397095492776380422007-12-28T10:44:00.000+00:002007-12-28T10:44:00.000+00:00Good improvement so far. Keep going. \(oo)/.Hope t...Good improvement so far. Keep going. \(oo)/.<BR/>Hope to see an accurate object can be printed by the machine in the near future.Anonymousnoreply@blogger.com