I was trying to make a graceful curve in a piece of tapered pipe using a flat hammer and kept coming out flat. I have a bottom fuller that is round, was wondering if the problem is just changing to a round face hammer or do I need to make a different bottom tool to.

Duck, what kind of tapered pipe you got ?

Could you oval the pipe on the X-axis, so when you curve it on the Y-axis, it magically comes out round?

I would say a stake tool to fit inside the tapered pipe, that can handle hammering on the outside to curve it.

peen it. your flat hammer covers too much area with one stirke. remember the basic hammer blows.