jammy
I would copy the profile of the Salmon mudguards, if you were going to try this out. They aren't totally flat, they have a lip running along the edge, so the inside has an edge that help stop water from coming out of the sides. If you make guitars and thus have good tools this may not be too much hassle for you.
Presumably the whole point of laminating would be to do your own lam in a jig (made of old rims?) with the arc already set up, thus no 'bending' anything... in which case one could also make them have a curved section, presumably?
The compound curve would be possible, but tricky. I'd have to build up a larger mudguard blank out of stripwood laminated round a form, then shape it to the final profile with a spokeshave.
RE: using old rims for a form. Wouldn't I want the radius slightly larger than the wheel (EG use 27" rims for a 700c wheel) to allow the gaps to be even when it's set back from the tire.
The compound curve would be possible, but tricky. I'd have to build up a larger mudguard blank out of stripwood laminated round a form, then shape it to the final profile with a spokeshave.
RE: using old rims for a form. Wouldn't I want the radius slightly larger than the wheel (EG use 27" rims for a 700c wheel) to allow the gaps to be even when it's set back from the tire.