On Friday 05 June 2020 23:46:24 Chris Albertson wrote: > Is the test block over sized by the same amount if you measure one > block or 4? Or is it always over sized by the same amount? > > This will tell you if the scale is wrong or if the oversize is just > that the skin is thicker and more rough than it should be. There > should be a constant AND a multiplier. > > The best analysis method is to enter the measurements into Excel and > let it make a plot and have it do a least-squares fit of a line to the > plot. The slope of the line is the multiplier. > > Most people do have to clean up their prints with a file or sand paper > to get the bumps off. I'd measure after a quick sanding job
Thats pretty small to sand. > Usually the first stuff that people print with their new printer iis > upgrades to the printer. Usually things like hold down clamps and > corner braces to make the printer more rigid. The best improvement I > did was screw the printer down to a work table, just 4 small wood > screws. Actually, the way its machined and assembled, it is pretty rigid. And I don't have a table for it solid enough to count. Steel tube framed folding table with a saggy 1/8" thick masonite top. Typical 20 yo walmart/costco stuff. Bought it to hold a small fridge in a motel room while I was playing consultant after I retired. IMO the worst is a lack of 4 holes in the verticals, 2 for access to the 2 screws on the left end of the x bar, and 2 to put pins in for the x-bar to rest dead level to the rest of the frame on them while all 4 end carrier bolts are torqued down, reducing drag on the z drive screw at the same time. That, and better home switches, these are junk. I'm not convinced the y switch even works, it slams the stop and hammers the motor for 3 or 4 additional seconds and finally accepts that it zeroed. No double check is ever done, like x and z switches do. > On Fri, Jun 5, 2020 at 6:12 PM Gene Heskett <ghesk...@shentel.net> wrote: > > On Friday 05 June 2020 13:44:22 Karl Jacobs wrote: > > > Hi Gene, > > > > > > take the attached file for 5mm calibration steps and put it into > > > Cura for slicing. This is about as simple as it gets for initial > > > tests. > > > > This I take it is to be used to diddle a xyz scales? its between .1 > > and .2mm oversize in both directions, not too non-linear, just a tad > > oversize whether I measure one block or all 5. > > Thanks Karl. 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
