The script looks something like this, where the sleep interval needs to be tweaked for some games:
5::
Suspend, On
Send, 5
Suspend, Off
Sleep, 1000
Send, 1
return
Trying it out on some games, it worked really well. Only Final Fight needed a very long delay to work reliably for some reason.
Though if it does not work, its kinda annoying that you need to insert a new coin to try again ...
As I am trying to replicate the original x-men arcade cabinet including the art, I don't want to have any buttons on the control panel that either look out of place (as a volcano button would) or would obscure the artwork. However, I just realized that the control panel box overhangs quite a bit, so maybe I can put the start buttons on the underside instead. That way you can't accidentally hit them, and they will be pretty much out of sight. Hopefully I have some time this weekend to work on the control panel box, so I can try out this idea.
Wood wise I ordered 3 sheets of "18mm grenen multiplex, kwaliteit B/BB onbehandeld". According to Google, 'grenen' translates to 'pine' wood. Not sure if that is correct as 'vuren', which is cheap soft wood typically used for battons, also gets translated to 'pine'. Anyway I am not to enthusiastic about it. A single sheet is about 100,- euro, the edges splinter all the time, and the wood feels very 'hairy'. I am really fearing the painting phase. I bought some ply wood before in a local shop, and that was much better quality. Can't recall exactly, but I thought that was Birch.