Rubber Template Stamp for Balsa Cutouts

If you’re tired of marking the slots for spars and stringers on the outlines of your ribs and formers, try this. Cut several 3-inch lengths of suitable dowel: shave their ends, then clue on rubber pads that have been cut to match the cross-sections of the spars, etc. After that, you’ll only need a well –inked stamp pad. Adapted from Jim Newman’s 400 Great R/C Modeling Tips, an Air Age Media publication.