How about "forms?" But I'm not one to quibble about usage, as you know.

I build without molds. I mostly build double sides, and molds aren't needed once you laminate. Since most people use molds and like them, I'm not going to say that a new builder should build without. Probably it's best to use them until you know what the issues will be. But one would not know from the previous posts that there are any advantages to going moldless. Mainly it becomes so easy to handle the rim set, to access it from any angle. And nothing gets in the way of clamping the liners or side braces. One also is not constrained from tweaking the shape in any direction one chooses, at least with single sides, and in a couple of directions with double sides, too.