On Thursday 26 August 2021 22:58:10 Leonardo Marsaglia wrote: > > But I still think the loose belt is a better idea. But get rid of > > the separate and expensive ball bearings and make the armature > > itself eccentric, wrapping it in a dual row, printed in plastic > > bearing using crosman bb's for balls is working moderately well for > > me. And it will be strongest when the splines are worn to fit each > > other. What I am fine tuning right now, and may have to resort to a > > smaller nozzle to print it, is a new preloaded fit that when broke > > in, still has zero backlash. But one of them has now been running on > > my kitchen counter for a month at about 20 rpm output, 600 at the > > motor, with no noise and no breakage, with a 1NM motor turning it. > > But it can't be done in PLA, must have the more flexible PETG. And > > that eliminates any printer not using at least an E3D V6 or better > > hot end, I now have 5 printers tossed in the corner, which claimed > > to be able to use PETG. Once maybe, but not a full spool of it. > > Hi gene, I hope you're doing well. > Other than a PSA out of sight, par for my age, I think I am doing well for 86 yo. Neighbors see me working in the yard and claim I'm lying when I say 86. Right now I'm putting in vinyl fence, so I'm pulling postholes for the older stuff. Thats an8 foot 4x4 with a 2 foot plug of cement on the bottom of it, and its about all my 18 horse husky rider wants to pull to get it somewhere near the "take it to the landfill" trailer. And I've 3 of those to pull yet. Broke my 20 yo handiman jack loosening that one, bought a long ram hydraulic and a bucket of chain to finish that but that jack is a lot slower than the handiman, so its about 2/3rd fixed now. Need to make a 5/8" pin thru the top hole to attach some guy cables to from a 3 foot 2x6 screwed to its foot. Tomorrow if the weather co-operates.
> What problems did you have with your printers and PETG? Have you tried > the Ender 5 PRO? Thats one of the printers sitting in the corner pile. It sorta worked, but the plastic extruder broke and I put one of crealities all metal ones on it, an exact copy of the plastic one but all metal, but after I'd put it back together, it would only drive the build plate down. I sent creality a message but never got a reply. So then I believed the propaganda and bought a CR10-S Pro V2. Which started leaking between the heat break and the sink on obout the third print. So then I bought a BIQU HX which has the latest H2 printhead, and bought another H2 thinking of putting it onthe CR10 but while the BIQU has excellent firmware and a 7" touch screen, it too rejected a steady diet of PETG, leaking from above the hot block, and its a bear to get apart and worse to put back together, so combined with a poorly designed adaptors because the Pro V2 has a totally differnt carraige, so it never got put on. Then I spotted the Haldis version of an E3D v6 and some mounting brackets for that, designed and printed an adaptor to put a sherpa ejector on top of the haldis for a direct drive. All this after buying an $800 prusa as a kit whch does have an E3D V6 hot end hidden in the plastic the Prusa head is made of. And even the Prusa is high maintenance due to the nozzle being self loosening if not cranked down hard enough to kill an Olsen Rudy. About every other day. And you have to take the part fan and nozzle off to get a wrench on the hot block, and since the recommended temp to tighten the nozzle is 290C, you've got about 10 seconds to tighten it before the wrench burns your hand. But I may have now blown something in the CR10's filament detector circuit, there was a blue led on an interface board at the left end of the X bar, which went out forever when I plugged the sensor back in, and now creality is refusing to give me a filament sensor wiring diagram. I wouldn't mind putting a few shekels into the ender 5 or the CR10, but if creatilty refuses to supply that info, then the ender 7 goes off my wish list. Even a $2000 Dremel cannot do PETG, I sent it back because a lot of other stuff it had didn't work, they put a nozzle in it and sent it back. So just to get that lesson out of the house I gave it to my stepson. He's feeding it PLA and having a ball, but without doing PETG as a daily diet, it was just a headache I had to walk around. Also. the ender 5 Pro wasn't square, so circles printed like a leaning eccentric. About 1/8" trapezoidal. Loosening and retorqueing all the bolts in the top frame didn't help. > I have one of those and had moderate success with > PETG (didn't worked with it too much) but I use it mostly with ABS to > create casting patterns because it is easy to sand and smooth with > acetone. The extruder is not direct but it's all metal and the hotend > reaches 260º. I just changed the firmware to the latest Marlin and > activated the manual mesh levelling to get better adhesion. Also I > made a quick enclosure for it with polycarbonate and put a resistor > inside to heat the chamber to 60º C. I'm priting ABS with a 1 mm > nozzle pretty well. Tried nylon and had some success with small parts > but horrible warping with large parts (also at 60º C on the chamber). I bought a roll of polyprop, but even magigoo could not make it stick to anything. Take care yourself, Leonardo. 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
