Jay, thanks for your reply.
The idea is cool, but there are some nuances:
1. The project, I and the buttons are currently in France and sending the buttons to the USA and then waiting back will be a little long and, most likely, a little expensive :)
2. I have already bought a laser engraver and want to to master it in order to offer the best service to my customers.
3. Together with the button on the control panel, they deliver a buttons with a spare and I have something to practice on. But I decided to take the easy way first and ask my dear colleagues :)
Have a nice day! I read your blog carefully.
Yevhen