Trammel Heads for Occasional Use
F
ACED WITH THE OCCASIONALneed to draw large-radius circles, I
made a pair of wooden trammel heads that will fit on any avail-
able scrap 1x2.
Each head is 1^3 ⁄ 4 in. square in section, with a notch to accept the
beam and a wedge for tightening. A clamping block at the bottom of
each head will take a steel spike or a pencil. To make the clamping
block, drill a^5 ⁄ 16 -in. hole in the center of the bottom, then cut away a
portion of the head halfway through the hole. Drill the block for two
tightening screws.
—PERCYW. BLANDFORD,Stratford-upon-Avon, England
MEASURING, MARKING & LAYOUTTrammel heads fit
any scrap 1x2.Screws clamp
pencil or metal
point.