Just finished my PML Bull Puppy and putting on the final finishing construction touches. I would like to use two-part foam epoxy in the fin can to strengthen the fins. I figure it would a lot easier than trying to do internal fillets.
A few questions
How much weight does the foam add?
I was told to put external fin fillets on first before using the two part foam because it will expand through whatever openings you may have.
What is the work time?
Do you mix it up without water and then pour and add a couple drops or do you mix the parts with water and then pour?
I never used it before so that's why I'm asking? I don't want to make a mess.
I'm also going to build it per instructions with the piston ejection. Has anyone ever built one of these kits with the piston? Did you CA the piston and sand smooth or just leave it as is? I noticed the nose cones fit really tight so I ended up sanding it with 100, 150 and smoothed it out with 220. Fits much better now but it took the better part of a couple hours to get it right. When I pick up the rocket from the nose cone the tube will slide out so I'll need some tape for a slightly snug fit. When I sanded the nose cone I didn't have the rest of the rocket together so that why I may have slightly over sanded it.