Some Model Engineering related resources:

1. Engineering drawings of small model engines used for model aircrafts. They are designed for manufacturing and working, not not like showcase item. We can actually build them.

https://outerzone.co.uk/plans.asp?cat=Engines&Xcardsperpage=...

2. https://modelenginenews.org/midge/index.html

Outerzone is a great site for (mostly vintage) model aircraft plans.

Cut my fingers up many times as a kid trying to start Cox model airplane engines…

I still have a Cox .049 engine in the basement somewhere.