RE: CoroCub - a little bigger one.
Engine mount.
Somehow the cutting board I was going to use did not want to stick well to CA. So I decided to use 'calssic' plywood type firewall. The rest is SPAD. Pieces of gutter pipe were used to 'link' the firewall with the landing gear block and the rest of the plane. Because my fuselage is wider than original I used additional pieces of gutter pipe instead of coroplast for that. I'm thinking of making some lightening holes in this pipe, but I need to experiment first with some spare piece to see if and how it will weaken the entire mount.