Sanwa OSBF-30 1-1/4" hole adaptor

If you bought some nice new Sanwa OSBF-30 buttons for your arcade stick, and figured a 1 1/4" drill bit is close enough to use on your wood box, you probably feel the pain I felt when I saw just how loose that fit was. The 2mm variance between buttons, and even some holes peeking out from under the button flange when the button is slid to one side... absolutely unacceptable! I even went to the trouble of finding reddit posts that claimed it would be a satisfactory fit.

What to do? I wasn't about to cut, glue, sand, router, drill, and paint another cabinet. So I made these shims to give a better fit. They work great, and now nobody will know I cheaped out on buying a 30mm drill bit. :D

Some printers will prefer you use a brim for good bed adhesion (since the parts have a very small footprint). The model is 0.9mm thick, which works perfect with 0.4mm nozzles and a 0.45mm line width. Print 2 shims per button (one for each side). Orient the shims so the square notches are near the top of the button, snap the fingers into the slots next to the Sanwa's tabs, and press fit the button into your 1-1/4 holes.

Enjoy!

Category: Games