Boxes.py
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BurnTest

Test different burn values

Settings for Finger Joints

angle
style style of the fingers
surroundingspacesmaximum space at the start and end in multiple of normal spaces
edge_widthspace below holes of FingerHoleEdge
fingerwidth of the fingers
playextra space to allow finger move in and out
spacespace between fingers
widthwidth of finger holes

BurnTest Settings

xinner width in mm
stepincreases in burn value between the sides
pairsnumber of pairs (each testing four burn values)

Default Settings

thicknessthickness of the material
format format of resulting file
tabswidth of tabs holding the parts in place in mm (not supported everywhere)
debug print surrounding boxes for some structures
referenceprint reference rectangle with given length (zero to disable)
burnburn correction in mm (bigger values for tighter fit). Use BurnTest in "Parts and Samples" to find the right value.

Set burn in the Default Settings to the lowest value to be tested. To get an idea cut a rectangle with known nominal size and measure the shrinkage due to the width of the laser cut. The burn value is half the difference of the overall size as shrinkage is occuring on both sides. You can use the reference rectangle as it is rendered without burn correction.