Pre-painting foam board?

[nhk750]

I just finished my first Speed build kit, the Storch, using the water resistant foam board kit. I painted it with Bin Zinzer sealer then Rustolium and it came out kinda rough. I didn't care to much anyway as this is my first foam board plane and it is going to be a trainer, so it looks ok for a rough trainer...

Anyway, on my next build I was thinking about using the regular foam board speed build kit, Minwaxing before hand, then also painting everything before I build. My question is, will the paint crinkle or crack when I bend the wings into place, using the Storch for example...also the A and B bends, will the paint hold up or will it just flake off. Is it better to paint after the build?

The reason I was thinking about using the regular foam board the next time is that is looks easier to work with and after Minwaxing it looks to be water proof.

Thanks!

 

[nhk750]

Pic of my Storch, A little on rough side, a learning experience. ARF, just a few adjustments and a dry day needed now...

 

[JamesWhom]

That looks superb. Good job!

 

[nhk750]

What is the easiest way to install the rubber bands on the wing? My club like hands have problems getting the bands on the dowels and I am afraid I am going to damage the wing...