Hmm... From my understanding, you're aiming for heterozygous offspring for frizzles, right? I apologize if you know this already and I'm giving you redundant information... Correct me if I'm wrong, please!
Let's say the frizzle allele is F, and the smooth allele is f. Frizzle is (edit: incompletely) dominant.
ff - Smooth (homozygous; doesn't carry Frizzle gene)
Ff - Frizzle (heterozygous; our goal)
FF - Curlies (homozygous; very bad feathering)
So anytime you breed your Frizzle (Ff) with a smooth feathered (ff), you will get:
50% Ff and 50% ff (so half frizzle, half smooth)
It's pretty much safe to breed your frizzle to any non-frizzle, because if they are carrying the frizzle gene, they will express it physically, as it's dominant.
Smooth feathered seramas cannot be carriers for the frizzle gene. Otherwise they would be frizzles.
Therefore, it is impossible to get a brood of only frizzles (even if you breed two frizzles let's say Ff and Ff), unless you don't mind the curlies. You will still also get a mix of smooth feathers as well. (I think it was 25% curlies, 25% smooths, 50% frizzle)
UNLESS, you breed curlies to smooths. You will get 100% frizzles.
Here's @LTygress punnett square for Frizzle (Ff) X Smooth (ff)
Edited by solomine - 2/4/16 at 2:06pm