It was Mike with made me aware of this Chevy tool. He also was enthusiastic about the man ( I hope you know him) who helped him during the building process.
I don,t have a decent scrollsaw and sometimes I consider to build a homemade scrollsaw or a chevy. Problem is I don,t really have anymore room for it. So a foldind chevy would be my favourite.

https://dutchypatterns.com/