Dotco Router Guides For Router Bits with 1/4” Shanks. For use on Dotco 12-10, 12-20, 12-20, 12-25 and 12-40 series. The minimum router bit length (OAL) to be used is determined by the formula: OAL = 1-13/16”+C+P (series 12-10); OAL = 2”+C+P (series 12-20 & 12-25). “C” is the “C” dimension of the router guide and “P” is the desired protrusion of the router bit.
Important: Insert bit into collet as far as possible, then pull out 1/16” and tighten collet.
In an emergency: If it is necessary to pull out the bit more than 1/4”, be sure to insert a short length of blank shank (not to exceed 5/8” long) in the bottom of the collet before inserting the bit.
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