The laser cutter I usually use is not available for now, so I had to assemble my project virtually, hence the renderings instead of photos. As an open source project, contribution is welcome and perhaps an interested volunteer with a spare plywood board will test physically and validate my design. ;)
The slots of this design are adapted to a 4 mm (almost 3/16'') thick plywood but can be easily adapted to any size and material, using the plans provided.
If you don't have standardized weights, I made plans for them too. Knowing the density of a material, you can calculate (explained in the last step) the volume needed to obtain grams or ounces, and then cut it with the laser.
Step 1: Materials
- 4 mm plywood board (or plastic) : 37 cm x 44 cm (15'' x 18'')
- 3 small nails (for the pivots)
- material for the weights (plastic or wood)