Ball lifter project

[browne92]

I got through several gears before deciding that laser cut acrylic is way too brittle for this part of the design.

The problem might not be the acrylic, but the laser cutting. Heat from the laser causes stress to form in the acrylic and makes it brittle. You can relieve the stress by annealing, but that requires heating in a controlled oven and slowly bring back to room temperature.

You'd might have more success machining instead of laser cutting, but then there are probably more suitable plastics anyway.