Using Fusion360, one block takes around 1~2 minutes to design.
~41 minutes per block
Making Sketch for Laser Cutter
Using Fusion360, save as DXF
20mm thick blocks
Open DXF file on Adobe Illustrator
Save it as .ai file and bring it to a laser cutter
70% power but slow speed of 5%.
Repeat the process twice / three times
The sides of the wood got burnt