I would very much like to hear what the experts at Mobile say, if you can get an answer from them.
But what I do is save fail and redesigned printed parts so I can do experiments on them like testing of Epoxy or CA glue is best or just put them in a vice and bend 'till they break. I've never done grease and oil tests but you likely have enough reject parts not to at least test of the oil dissolves PLA or not They say PLA is made of corn oil and is biodegradable. But I've yet to see any biodegradation even with part soaked in water. But I do see very fast wear with PLA parts. If I put a steel shaft on a PLA bearing the bearing hole gets worn out. What I found is I can but bronze bushings and pres fit them in the PLA hole. Oilite bronze on steel works well untill in get hot and melts the PLA. Another solution is skateboard bearings. These are cheap The best harmonic redcer designs I've need use bearing for the pins so the PLA is not needing to rub on a pin. I've foubd PLA does not like friction so pressed in sleave or sealed bearinbg units are best. and these are really cheap on eBay and can be re-used on furute projects many times. But plain bearing made of PLA just don't last. On Thu, Jul 23, 2020 at 12:01 PM Gene Heskett <[email protected]> wrote: > Greetings all; > > Slow, makes watching grass grow exciting... 3h:40m into making the > housing cup, its claiming 6% done. And still doing infill for the end > wall stuck on the bed. > > Someone said that it will need grease and mentioned the silicon stuff > used in power tool gear boxes. But one of the features of si stuff is > its total lack of surface tension which generally prevents actual > contact between the parts. And thats good. Thats what the EP of a > grease is all about. But I've no clue how PLA and petro based greases > get along, so what is the best grease for PLA parts? Do we have to use > si based stuff which equals a higher wear rate to keep the PLA from > deteriorating from the petro based grease? > > Inquiring minds would like to hear the merits discussed. Or should I > call the Mobil Oil warehouse in Omaha and put it to the real experts? > > Thanks all. > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
