Sanwa Adapter for 25.3mm Button Caps

Introduction

This is an adapter for these spiral-y caps from AliExpress to fit onto the microswitch in a Sanwa OBSF 30mm arcade button.  I am unsure how consistent they are across brands, but I assume they all use the same injection mold.

In terms of compatibility, the stem in the cap should be 5.6mm in diameter and 5mm in height. I believe the adapter should work in the Sanwa screw-in buttons, since they use the same SW-68 switch, but I do not have any to test with.

Future Changes

• May add models with different tolerances

Printing Suggestions

• 4 Walls / 20% Cubic Infill / No Supports
• Only tested in PLA/PLA+, but other materials should work. If printing in TPU, use this model instead. 
• Can be printed on either side, but I do it with the H facing the plate
• STRONGLY recommend enabling polyholes in Orca Slicer – or equivalent
• You may need to make adjustments based on the tolerances of your printer

Assembly

Simply plug the 25.3mm cap into the top of the adapter.  It should fit snugly.  Keep in mind that there are tabs on the side to guide the cap to seat properly.  If you do not follow the guides, it will protrude far above the rim of the Sanwa button enclosure.

Swap it with the existing plunger in your Sanwa OBSF and you should be good to go!

Happy Printing!

RAF