I've found an affordable source of G10 sheet, and I'd like to know whether it would be better to get the .078" or .093" thickness. I'll be using this for 3"-4" rockets weighing from 2-5 lb.
It's as much a function as motor size as it is airframe diameter and mass. However you did say "mid-power" so:
The .078 is likely fine, perhaps even .062.
That said, the REAL issue that need to be addressed is (and I'm sure others will have picked up on this as well Tell us more about this "affordable source of G10 sheet" that you mentioned.
I'm planning on flying large mid power clusters, G and up, as well as small Hs. Fins won't be abnormally big, usually about 1:1 span to body diameter. I'm using a g10fr4.com.
What do you use to cut out G10 fins? I've used a wood saw with fine teeth to cut G12, but does the different fiberglass arrangement in G10 make it harder to work with?
What do you use to cut out G10 fins? I've used a wood saw with fine teeth to cut G12, but does the different fiberglass arrangement in G10 make it harder to work with?
Both are equally hard to cut, but usually when cutting fins you cut much more linear distance than with a tube, so you dull the teeth very quickly.
The ideal is a carbide grit blade on a bandsaw, or waterjet cutting. Neither is very cheap, but replacing ordinary steel blades repeatedly isn't fun either.