Originally Posted by TranquilTempest
Which part of a mouse needs tolerances that tight? The sensor height isn't that sensitive, and pin plunger microswitches have a throw about 5x that.
Also, if you knew anything about high precision, you'd know that humans can hold MUCH better tolerances than that. Many high end machine and measurement tools use hand scraped ways and surfaces, and in the context of making a plastic shell fit the switch placement, you could get that tolerance in a few minutes with some sandpaper or needle files.
Anyway, sculpting a mouse isn't about matching a tolerance, it's about matching your hand.
Sculpting a mouse is both, in fact. Sculpting outer surface is matching the hand, sculpting inner surface is about tolerances. That's why mouse companies who make their own shapes make prototypes out of foam/wood/whatever else. Then they digitize them and make inner structure in CAD. Try to open any modern Logi mouse for example. I really doubt you can do that by hand.
Also, if you overdo things with sandpaper, you can't revert that obviously. To me it looks far more reasonable to do that in CAD.
P. S. tolerances stack. You can get +-0.45 button travel from 0.15 tolerance on bot shell, top shell, and stem of top button.
P. P. S. i'm only interested in your opinion if you did that stuff yourself, i dont need ur theories.