Boxes.py

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BurnTest

Test different burn values

Settings for Finger Joints

angle
style

style of the fingers

surroundingspaces

manimal space at the start and end in multiple of normal spaces

edge_width

space below holes of FingerHoleEdge (multiples of thickness)

extra_length

extra material to grind away burn marks (multiples of thickness)

finger

width of the fingers (multiples of thickness)

play

extra space to allow finger move in and out (multiples of thickness)

space

space between fingers (multiples of thickness)

width

width of finger holes (multiples of thickness)

BurnTest Settings

x

inner width in mm

step

increases in burn value between the sides

pairs

number of pairs (each testing four burn values)

Default Settings

thickness

thickness of the material (in mm) 🛈

format

format of resulting file 🛈

tabs

width of tabs holding the parts in place (in mm)(not supported everywhere) 🛈

debug

print surrounding boxes for some structures 🛈

labels

label the parts (where available)

reference

print reference rectangle with given length (in mm)(zero to disable) 🛈

burn

burn correction (in mm)(bigger values for tighter fit) 🛈


This generator will make shapes that you can use to select optimal value for burn parameter for other generators. After burning try to attach sides with the same value and use best fitting one on real projects. In this generator 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. Now you can measure the burn value that you should use in other generators. It is half the difference of the overall size as shrinkage is occurring on both sides. You can use the reference rectangle as it is rendered without burn correction.

See also LBeam that can serve as compact BurnTest and FlexTest for testing flex settings.