On Wednesday 03 June 2020 07:44:31 Gene Heskett wrote: > On Wednesday 03 June 2020 06:10:18 andy pugh wrote: > > On Wed, 3 Jun 2020 at 07:27, Gene Heskett <ghesk...@shentel.net> wrote: > > > 50% fill makes very strong parts, but 20% fill is strong > > > > > > > too. I usually use 20% or 25% infill. If I want stronger parts > > > > I'll increase the number of outer layers. > > > > > > I'll have to ask how you do that with cura? > > > > Presuming that the part has been placed on the bed in Cura. > > Then in the bar at the top, where is lists the printer, the extruder > > / material and the quality, click the quality section, and you will > > seee a drop-down of all the settings. > > > > Then in the "Shell" section you can choose how thick you want the > > wall, and how many lines. > > okay. > > > I think that if your printer can print at 100% then it is probably > > under-extruding. There should be only barely space for 100% fill, > > and so you would expect cumulative oozing errors to build up. > > I don't think I see any of those. > > > I typically print at no more than 25% fill, and for foundry patterns > > I am down at 5% to save time. > > In this example, the base hub seems fairly solid, I don't have a tool > capable of cutting the nut pocket clear as it has a thin film of > adhesion layer across the opening that will need cut away before a nut > can be inserted. > > it stuck real well, and didn't even start to come loose until the bed > was down to 30C. Then it came off clean And the sprocket section > still looks like a 50% fill. Tooth finish is very rough. Nothing like > the OD and both faces of the hub. > > I resaved the sprocket so I have a good starting point for the next > run. This one might be usable, but I'd like to see a better finish on > the sprockets teeth. I can visualize a pile of rubber debris from the > XL belt on the table below this one. > > But before the next run, reset the z home about 3 or 4 mm lower, the > hand wheels to level the bed are so high they out of spring. And find > some washers for the spool holder, the screws are bottoming in the > channel and leaving the holder loose so it can tilt 10 degrees either > way. And the edge of the bed and the psu are touching & dragging on > the Y axis some. I am wondering it theres a small diff in the lengths > of the pre-assembled Y and bed "H" cross pieces and its been assembled > with them swapped. Theres a good 1/2" of clearance between the left > edge of the bed and the left leg. Stranger things have happened. ;-)
No chance there. Orientation is fixed by where the bolt mounting the computer is. But on the next pause, I'll loosen the bolts holding the y drive to the xbar and see if it can rotate it CCW about a degree which would align it better for clearance at the rear of the psu. I had to nip the stopper off the z switch and lowered it about 3mm. The limit is when its out of room under it because stuff is hitting the heater, like the brass ends on the Y belt that are sticking up. The wheels to adjust it work a lot better now. That was the general idea. :-) Anyway, 1mm thicker shell walls, only 50% infill in gyroid pattern, whatever that is, and a 5mm grub screw and pocket now. Laid down lots of brim for adhesion, looks messy, but all that comes off fairly clean. A somewhat worn 6" jointer knife, well magnetized to lay flat on the bed, makes an excellent cleanup tool, does leave any leftover plastic on the bed while the edge is clearing off anything left from the last run. And nozzle pressure against the paper should be easily felt. We're learning... Question, cura hasn't an obvious line feed speed, is this determined by nozzle temps or ??? Seems to my ancient brain that a higher nozzle temp would make it lay plastic faster, and the motor driving that would speed up a hair to keep up. Currently 200C nozzle and a 60C bed. 30mm max xy feed. Thanks all. 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
