3d Printing of part to improve machine operation

[Gero]

After thinking about it, I did find something that can be 3d printed and make the Maslow more accurate.

Set your 12 o'clock position with a level... because

About setting the 12 o’clock position with Ground Control, Do you see what I mean? [12oClock] I find it difficult to visually set it straight. Now you might wonder “How straight is straight enough?” Well 1/12 of a sprocket tooth distance is 3 degree. That is: [12oClock_ticks] And this causes about 0,5 mm chain position error on a sprocket. If both sprockets have an error around 3 degree off. They either go opposite (one too high, the other too low) and the X, Y workspace is shifted like t…

Creating the 12O'Clock calibration level in FreeCAD

In response to that post, @BradM created a nice tool to calibrate the Malsow 12 O’Clock chain positions. I designed a CNC version of it. Here you’ll find a description of how I made that with FreeCAD. [RearView] If you would like to follow-up, you should get the free open source FreeCAD tool version 0.18 or later. (As of january 2019, do not the CONDA flavor as some bug disables tag generation). Then download the 12OClockLevel FreeCAD project distributed here under a free and open source GP…