On Tuesday 02 June 2020 20:30:42 Dave Matthews wrote: > On Tue, Jun 2, 2020, 20:09 Gene Heskett <[email protected]> wrote: > > On Tuesday 02 June 2020 18:22:20 Chris Albertson wrote: > > > Cura has about 200 settings that you can change. You might try > > > printing on a raft or using say 50% infill density and Gyroid > > > pattern I print small gears with 1.6 wall thickness. Slowing the > > > speed to 30mm/sec works some times > > > > That last was so disappointing that I now have a 12 tooth gear, with > > a hub 12mm high, printing at 30mm and 100% infill. That of course > > disclosed that I wasn't anywhere near close enough to the bed for > > adhesion, so I raised the rear of it about a turn of the wheels. > > Then it started sticking. But there so little spring left to lift > > the bed that I'm going to modify the z switch to lower it another > > 1/8 ", which will compress the springs and make them far more > > repeatable. > > I found that cleaning the glass with alcohol and then giving it a > spray of aquanet hairspray helped adhesion a lot. I usually had to > let the glass cool completely to get the parts off.
This doesn't have a glass bed. Its sheet metal with a replaceable sheet of heavy textured plastic, like a really thick layer of stick-on shelf paper for a build surface. And each roll of plastic line has a new sheet of it in the box, I presume for replacement when it becomes damaged by the putty knife supplied to help break it loose. But the z home switch installs too high, which in turn raises the bed to the point theres little spring tension left, so bed adjustments are not being made as precisely as they could be, no spring left to raise the bed. Lowering the switch 2 or 3mm will make a huge diff in the repeatablity by compressing the springs that much so they can lift the bed when the wheel is adjusted. With a 100% infill, and slowed to a 30mm feed, its still in the hub section at 5h:49m and 41% on the progress bar. But its also looking a lot better. The first one, at 10 XL teeth, is downright ugly. At a 20% default infill, pretty rough and fragile teeth. This hub at 40mm diameter, should make a good measure of circularity, but I should probably make another with a 4mm grub screw. 3mm looks too small for an 8mm shaft. Might even try a 5mm screw. The screws left to mount the roll of line bracket are about 1 thread too long, so they are biteing into the bottom of the groove, and preventing the spool bracket from being held vertical, so I'll either find some washers or grind them a tad shorter at some point. Noisewise, its sitting on the top layer of shipping foam from its box, on a saggy molded plastic folding table and I can't hear it except an occasional squeak from the motors over the houses central air. Very quiet. The "Learning Curve" is leaning a wee bit. Thanks Dave 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
