"Mac" wrote in message news [snip]
If you go this route, consider having the core cut by the folks at
flyingfoam.com. They are in business to cut wings for RC gliders and
airplanes, but a core is a core.

--Mac


http://philsfoils.com/ is reported to do this sort of thing for dinghies and multihulls.
Probably cost-justified only if you're serious about racing.