Hi Gene, Thanks for that feedback. > I gave making cups up, they always broke, sometimes at the bottom of the > splines but usually at the corner junction of the output > disk and the bottom of the cup. Even in PETG. > > > Additional fillets on the inside of that corner just moved the breakage to > the top of the filet. > > > Sam's loose belt version has only broken once, when I tried to make it from > PLA. > > > The problem with printers that claim to be able to work in PETG is the teflon > Bowden tube that usually goes thru the hot and to the > back face of the nozzle, slowly goes away at the higher temps PETG needs. I > had to buy an $800 Prusa MK3S kit and build it, > took 3 days, to get an E3D hot end which puts a metal heat break that ends > the teflon tubing up inside the cooled upper end of the > hot end. Once I had replaced that heat break with a titanium version, I have > now put about 5, 2kg rolls of filament thru it without any > further take it apart trouble. It does need a good cleaning with a brass > toothbrush as it warms up though. > >
Interesting. I'll keep that in mind if I print some PETG. > >John > > > > -----Original Message----- > > From: Chris Albertson > > [mailto:albertson.ch...@gmail.com<mailto:albertson.ch...@gmail.com>] > > Sent: December-01-21 12:43 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] to JD > > > > The best stuff is PTFE based, "Superlube" for $5 on Amazon. This is a > > "food-grade" lube which means it is ok to use on food prep equipment (not > > to eat) and is non-reactive. It is what "everyone" recommends for 3D > > printed gearboxes. > > amazon.com/Super-Lube-21030-Synthetic-Grease<http://amazon.com/Super-Lube-21030-Synthetic-Grease> > > <https://www.amazon.com/Super-Lube-21030-Synthetic-Grease/dp/B000XBH9HI/ref=asc_df_B000XBH9HI/?tag=hyprod- > > > 20&linkCode=df0&hvadid=167152075853&hvpos=&hvnetw=g&hvrand=2257681426504032291&hvpone=&hvptwo=&hvqmt=&hvd > > ev=c&hvdvcmdl=&hvlocint=&hvlocphy=9031026&hvtargid=pla-315922229188&psc=1> > > > > Teflon is good stuff. It has low friction and is 100% non-reactive. I > > don't know what a carrier is but if the stuff is "food grade" i'd guess it > > is mostly harmless. > > > > On Wed, Dec 1, 2021 at 9:22 AM Gene Heskett > > <ghesk...@shentel.net<mailto:ghesk...@shentel.net>> wrote: > > > > > I'll also add some white lithium grease and then run it for a number of > > > hours. I suspect , > > > > > > > > > That petroleum based grease will craze the plastic, Sam. You need a > > > vegetable based grease or oil, crisco is cheaper than the "special" stuff > > > for plastic, which I've used on the bb's in miine. > > > > > > > > > OTOH the special stuff is IMO a bit thicker than crisco, I bought a small > > > can on it for $14 from > > > some guy in China. > > > > > > > > > Still on webmail (spit) excuse the mess. 7 damned bullseye installs later > > > I still don't have > > > the tools to make a proper email agent work.. > > > > > > > > > > > > Take care and stay well John. > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net<mailto:Emc-users@lists.sourceforge.net> > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > -- > > > > Chris Albertson > > Redondo Beach, California > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net<mailto:Emc-users@lists.sourceforge.net> > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net<mailto:Emc-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/emc-users > . > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
