Cutting on a curve

It's not very easy. Most curve cutting for commercial furniture is used with computer-controlled cutting machines, not saws.

Clamp boards that need identical curves together, and cut them at the same time. They may be a bit wobbly, but at least they match.

Use a router. The router bit cuts smoother curves than a jigsaw blade because it isn't jerking up and down.

The dirty little secret is that almost nobody cuts their curves exactly. The recommended procedure is to cut slightly wide of the mark (1/4" or less), then true it up with a rasp, a surform and a file.

If you're going to be doing a lot of one-off curved work, there's a tool called a turning saw or bow saw that makes it easier, although you'll still have to go back and clean it up. You'll just have to clean up less. The downside is these saws start at about $150 to buy, or you build your own (on my to-do list).

If you need curves that match, you cut one as a pattern, and then use a pattern routing bit in a router. Slightly more advanced, but gives you great reproducibility.

I'll have to look into the router bits since I do already have a router. I'm really wanting to tackle a bed for my son similar to the pottery barn speedboat bed and I want the curved bow to turn out right. Thanks for your comments!