The baseplate shown is Apple Ply. which I 'd characterize as an American-made version of Baltic Birch plywood.lt has 11 plies rather than the 7 plies typical of regular * » inch birch plywood. The slide is walnut. Hardware needed includes a T-nut, a thumbscrew or studded plastic knob, an 8d common nail, and extra-long mounting screws, all commonplace stuff.
1. Lay out the baseplate. The goal is to have a 6'/j-inch span from the bit axis to the tail end of the baseplate. 'lite length of baseplate needed to achieve this goal changes in proportion to the diameter of the router base.
Begin by removing the factory baseplate from the router you'll use on the trammel. Measure its radius, and add 6'/2 inches to that. Cut a blank: The width equals the diameter of the base, and the length equals the base radius plus 61/2 inches.
Use carpet tape to attach the factory baseplate to the blank, as shown in the drawing Baseplate layout. With a
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