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
