: I just built a strongback from rabbetted MDF to 2" x 4". It has
: couple of little curves to it.

: Nick's book is based on a "2x4" strongback and forms that have
: 2" x 4" holes, so you can true the forms on the strongback by
: taking advantage of the small difference, by shimming or using cleats
: (page 74). By building a true 2" x 4", I seem to have lost that
: option. I have no way to move the molds to accommodate the wiggles.

: Did I just screw up the strongback bigtime? If I do it again, might I get it
: right? Should I try planing the MDF strongback to true (but no longer
: 2")? Should I toss this MDF strongback and go back to 2x4's, ala
: Schade?

first see how easily the strongback bends - if real easy to wiggle then it should probably be braced or replaced.

if ok or bracable, then a hand held pruning saw is flexible enough, relatively fast, and crude enough (heh heh) for opening up the form holes while the forms are still on the strongback.