Gene,
I just went and looked at the Ender3 printer. There is one major difference between your Ender3 and My Anet A6. Yours uses a "Bowden Tube" type feed system and mine is direct drive. So on your system, the motor that moves the PLA filament is mounted to the frame and pushes the filament into the Teflon tube. On my printer, the motor is an integral part of the print head and those "pusher gears" are just a few mm above the nozzle. They use fins and a fan to keep heat from the motor. The advantage of your is a lighter head that can move faster and more accurately. Mine has better control of plastic quantity and flow rate. People will argue which is best. So the print heads are just a totally different design. Mine also has two sets of linear bearings and rides on ground steel rods and the rods are not part of the frame but are supported by it. Yours uses the frame as a track, This is why you never get the fan or blower duct on my printer to fit yours. There are two fans on my print head, one cools the PLA after it is printed and the other cools the extruder fins that are above the heater. Your printer should be able to make better PLA prints than mine. But mine can print soft materials like TPU. TPU filament is like a "gummy bear" and is very hard to push through a Bowden tube. I've used TPU to make rubber tires for small PLA wheels and rubber anti-skid feet and the "skin" over robot fingertips. It is a tough and flexible polyurethane. This explains it https://all3dp.com/2/bowden-tube-all-you-need-to-know/ On Wed, Jun 17, 2020 at 4:59 AM Gene Heskett <ghesk...@shentel.net> wrote: > On Wednesday 17 June 2020 03:20:36 Chris Albertson wrote: > > > On Tue, Jun 16, 2020 at 10:18 PM Gene Heskett <ghesk...@shentel.net> > wrote: > > > Yup. And it was, feeding about 44mm for 100mm commanded. > > > > > > Sounds like a clogged nozzle or maybe just needs to be hotter. Or > > > maybe > > > > the temperature sensor is uncalibrated. > > Possibly. I have an ir thermometer but thats a very small target. > Thermistors are very well known so I not be willing to accept more than > 1 degree of error. > > Using less filament than commanded means it is slipping on the feed > > rollers. There is a pressure adjustment. On my printer it is a screw > > with a spring and you adjust it to control pressure on the rollers. > > I'd say its sufficient as I almost have to use a pair of pliars to open > it far enough to feed by hand. So I'd discount that slippage theory. > The grip is truly a high byte grip. At the knurled roller, I'd have to > guess 75-100 lbs of squeeze. And the rollers knurling is sharp. > > > But these are the kinds of details that vary from one printer to the > > other. > > > > If this is a mechanical issue you shouldn't try and compensate with a > > software setting. > > > > I'm lucky and never once even after printing many spools of plastic > > had even one clogged nozzle. Being so lucky means I have zero > > experience with the problem. But I'd think it is not easy to clear > > it as it would be filled with hard plastic. > > Well, I went to bed with it makeing a new 30 tooth outer half sprocket > for an XL belt. Its now about 11.5mm up from the bed and I have never > seen anything like it, the teeth are well shaped and solidly rendered. > Unless its oversize, in which case I'll go back and make a few more > 5x5's and re-calibrate that, it will be a plumb purty sprocket, 100% > usable. Smooth, no loose threads anyplace I can see except some > slobbering in the base layer. Looks like solid plastic out of an > injection die. Best by far of anything else I've done. Getting it off > the bed may take some effort though, 225C/75C sticks it way too tight. > Welded to the polycarb cover sheet is a good description. Got about an > hour and a half to go. > > Starved for PLA, even 210/65 didn't stick. Recommended 200/60 might even > work, so cura gets cooled a few for the next slice. The Saintsmart > manual even uses a 40C bed, but that pdf is 3 years old too. > > The first thing I ever did was the waving cat. Outside walls might be a > 10% fill. So it came OOTB totally fubar. > > Oh, and as far as its being spring mounted, no, its solidly bolted to the > X carriage at the top, I had it all apart just to change the nozzle as > it was welded in by leakage past the threads and had to be heated above > 185C to get it loose with that toy wrench. > > Thanks Chris. > > 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 > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
