Protractor Laser Cut - Winkelmesser

3D-printed protractors have a pretty low resolution for the scale lines. Therefore I created one to laser cut with engraved scale markings. 

I've included two different versions, one with a half circle and one with a quarter circle scale. Each of them consisting of 3 layers for best results. The first layer is for engraving the marking lines, the laser cutter should be set to line mode, not fill mode to engrave these because then the resolution and positioning of the lines is better in this mode. The second Layer is for engraving the numbers, this should be set to fill engraving. The final layer is the outline for cutting it out. 
You can either import the single layers one by one and align them with a little square in the lower left corner or import the file with all three layers as one. This is recommended if your software can still differentiate the line types and orders them already in the different layers (Lightburn does this).

Additionaly you need to print the connector twice and screw everything together with a M3x12 or M3x15 and a nut. 


The Scale shows:

-Angle in Degrees (every 20th degree marked)
-Fractions of 90° (1/8; ¼; ½; 1)
-Angle in Double Radians (the marked numbers are double the shown angle in Radians)
(e.g. 45° → 2*45° = 90° = Pi/2 = 1,5708)
-Angle in Gon (on the most inner Scale)