Core box bits for a router
Photo and Illustration: Ted Morrison; Gregory Nemec
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Useful Bits

Compact routers take only bits with 1/4-inch shanks, but there's a universe of them out there. Start your collection with these four.

Core box
Use it to mill round-bottomed grooves, called flutes, for sign lettering and casing. 1/8-inch solid carbide, about $25;
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