On Tuesday 08 September 2020 04:20:13 Gene Heskett wrote: > On Tuesday 08 September 2020 01:40:52 Gregg Eshelman via Emc-users wrote: > > Why such a thin layer height? 0.2mm would print faster. 0.3mm prints > > even faster and can be stronger due to thicker layers and a whole > > bunch fewer layer to layer bonds. Of course the surface finish is > > rougher but at least for experimenting it would make the test models > > much quicker to print. > > True, but the dimensions change, AND I want the spline mating surfaces > as smooth as possible so a light coat of coconut cooking oil can lube > it for quite a while. And because of the extruders flow limits, a > taller layer wouldn't gain much time as you'd still have to slow down > to allow the extruder to keep up with PETG. Time to bond before > cooling was improved quite a bit by slowing the side fan to an idle > speed, I just made the best bearing carrier I've made yet by > essentially turning it off. And I'm ploting how to fix a baffle on top > of the hot block to keep the front fans cooling air away from the hot > block. Those hot ends that have the fan clipped onto the heat sink > look like a better idea. Still looking for a 2 bolt mount that does > that.
Haven't found one, yet. Query into matterhackers to find me one, and a controller board that will go to 300C. PS on extruder flow. Because the motor bolts directly to this drive, the heat makes the screws come loose, I assume from the phenom they call cold flow, so in the process of fine tuning this, I decided to remake the motor cap of the housing, currently made of PLA, from PETG as it might stand the heat better. This is a 100+ mm diameter part with lots of flat area which made my very slow defaults cause it to slobber all over itself from excess flow. So, over the next 4 layers I dialed back the flow, and cranked up the speed to spread the available flow thinner, and by the end of the .48mm layer, all the slobbering was gone, 99% of the bumps were ironed back into place and the scan speed cranked up to 220%, while the flow is dialed back to 58%. And its still laying it on thick enough that a rapid move with no z hop, is scratching the previous layer. The next trip over the scratch clears it right up. I'm learning. 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
