I always have to look this stuff up. https://www.engineersedge.com/hardware/standard_metric_hex_nuts_13728.htm
The other way to make metal threads is this. You heat them with solder iron (hold the tip up vertically and place the brass nut over the tip.) then push into a plain hole and the PLA solidifies Makes a very professional looking result. amazon.com/Hilitchi-250-Pcs-Threaded-Embedment-Assortment... <https://www.amazon.com/Hilitchi-250-Pcs-Threaded-Embedment-Assortment/dp/B0784VYCYY/ref=pd_lpo_60_t_0/140-9661733-2175833?_encoding=UTF8&pd_rd_i=B0784VYCYY&pd_rd_r=dfc2953c-1f19-4e8a-9c8e-6b470fedbb44&pd_rd_w=OM2eJ&pd_rd_wg=vtCkD&pf_rd_p=7b36d496-f366-4631-94d3-61b87b52511b&pf_rd_r=06X8CQ3X8Z5DAHSD2XFD&psc=1&refRID=06X8CQ3X8Z5DAHSD2XFD> Yes, printing slow makes everything shake less. I print at 60mm/second and seem to get better layer to layer adhesion. But I bet I could do better only once something works I hate to change. I printed some braces and screwed the printer to the bench and that helped the most. There are dozens of upgrade parts you can print or make. (1) look at the pulleys on your belts. Most cheap printers use smooth round ones with no teeth. These cause vibration on the belt and are best replaced with real timing belt idler pulleys with ball bearings inside. Make a filament feed that does not tug on the extruder. PVC pipe can work for that. Th best ones use ball bearings from skateboards, Some brands of plastic are simply better. Some of tigher tolerances on the diameter (0.003 vs 0.005 mm) so the feed is more consistant. These are many tiny things that might add up. On Sun, Jun 7, 2020 at 7:44 AM Gene Heskett <ghesk...@shentel.net> wrote: > On Sunday 07 June 2020 01:21:39 Gene Heskett wrote: > > I went back to the 12 tooth I'll use for the motor pulley on the BS-1 > clone, and made it with the newer configuration. > > Surprise, no junk in the access hole or the nut pocket, but I'd increased > the nut size to a 5mm nut, which left the outside wall a bit thinner > than I'd like, so I'll add a couple mm's to the hub diameter. > > But before I do that again, perhaps someone could give me better > measurements for both its width and thickness for a std 5mm nut? > > This pulley would be usable, but belt tension is going to be quite high > as the teeth, at this diameter are rounded enough to allow it to hop. > Its a good looking render other than that. Would slowing the movement > speeds down improve that? Render time was just a few seconds over an > hour, which is a huge improvement. > > Adhesion problems are gone if the first layer is under .1mm thick. Thats > about onion skin if using a paper for gage. > > Many thanks for all the help folks. > > 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
