foam NC questions.

[rocketkid88]

OK guys, i turned my first two foam NCs a while ago out of that blue insulating foam. One 2" X 6" one and one 18mm X 1.5" one. They both got all right considering they were my first attempts...
after turning them i coated all the exterior (not the shoulder) parts with Elmers wood filler, to create a smooth surface to paint. Today when i painted them the foam started to melt in some places I guess that the paint seeped thru the filler.
what are your opinions on this, and what should i do?

 

[wwattles]

I've heard the pink foam is more reliable. Second, you should test your paints on a piece of the scrap before using them on your actual nose cones... might save some of the pain of having to re-turn them! Of course, for someone like sandman, turning new nose cones is more fun than actually using them, or so it sometimes seems...

WW

 

[Austin]

Rocket...you may wish to coat the nosecones with a thin layer or two of epoxy...that way they would not be effected by paints.

Carl

 

[rocketkid88]

the pink stuff is more 'resistant' to paint, your saying?? I had tested the paints on a different type of foam b4, and it had melted, but i was hoping that with the putty on there wouldn't be a problem.

BTW: i enjoyed turning my NCs, but since teh only drill we have that works is cordless it can really kill a battery!!!

 

[rocketkid88]

Originally posted by CTulanko
Rocket...you may wish to coat the nosecones with a thin layer or two of epoxy...that way they would not be effected by paints.

Carl

but the epoxy wouldn't fill the porous foam as well... i guess if i put some filler down and than epoxy on that it would work tho...

 

[rstaff3]

Filler by itself will not protect the foam. Fill first and then, like Carl said, give it a coat or two of epoxy. This worked well on my Upscale Cluster Bomb project.

 

[Austin]

Rocketkid...one more thing...

You can go to the hobby shop and buy Water based acrylic paints to spray directly on foam. I use them on my foam R/C electric planes and jets and it works great.

Carl

 

[rocketkid88]

OK.. looks like every1 is saying about the same thing, so thats what i'll do thanx!!