This button crumbles on the switch of my saw as it sees constant heat. This was made using onshape if you want you can export from https://cad.onshape.com/documents/2dc11db1ebc5dc899a05659f/w/35f7d3b096ddc02991e65300/e/907f0ed18b979b6b758178c8 or fork this project.

This is a very simple model but it works