An inexpensive drill stop can be made out of RC model plastic fuel line. The drill size 3/32 #40 1/8 #30 5/32 #20 can be cut to or adjusted to any depth size. The total cost around fifty cents A no mar finish each time.
Yaw String
builders tips
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builders tips
I built a Witman tailwind 1972
i built a RV4 1991
I bought a RV4 2012
i built a RV4 1991
I bought a RV4 2012