My ender 3 seem to print petg ok... On Wed, Dec 1, 2021, 5:02 PM Gene Heskett <ghesk...@shentel.net> wrote:
> On Wed, 1 Dec, 2021 at 5:21 PM, John Dammeyer <jo...@autoartisans.com> > wrote: > > > To: 'enhanced machine controller (emc)' > >As it turns out I have something called Molykote 111 compound used for > lubricating > >the rotating valve for the Rocket Espresso Machine. Had to buy a large > tube for a once > >every 6 month cleaning and still have lots left. Definitely food grade > since it's in the > >hot water path. Should work great I think. > > > > It's also black, won't wash out of clothes. Takes about a week and lots > of 20 mule team > > boraxo to wear off your fingers. Good for bullets and rifle barrels though. > > > > >Just printed a cup with 1mm wall instead of 1.5 and random layer changes > to avoid > >the hard spot at that location. Doesn't seem any more flexible so it > may well be most > >of the stiffness is in the bottom part of large 1.25mm pitch teeth. > > > > 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. > > > >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
