Screw Slot Router Bits
SAVE $5! Get both styles in a set.
Two flute Carbide Tipped bits with anti-kickback design for safety. These handy bits route versatile screw slots for securing large panels or tabletops. Hole allows for expansion and contraction due to changing temperature and humidity, preventing the wood from splitting and the screw from failing. Available in the counter-bore or the counter-sink style. Fits #8 screws.
See the Review from the November/December 2008 Woodworkers Journal Magazine.
"Screw Slot Bits... Making slots for screws — rather than simply drilling around pilot holes — is sometimes essential to allow for wood movement or for adjustability. But making those slots can be really putzy. Did you know you can get a router bit to cut those slots? Two, in fact: one to make a slot with a countersink for a ftathead screw, another for a counterbored slot for a roundhead screw. Both are porportioned for #8 screws. Use the bit in a plunge router (or in a table-mounted router) to cut a slot in one quick operation. Clean slots for #8 screws are a job for the router, not the drill press. One bit cuts the slot and a countersink... the other makes a slot with counterbore. Use a plunge router to make blind slots."
November/December 2008 Woodworkers Journal Magazine.
|A Counterbore Screw Slot Router Bit|
|B Countersink Screw Slot Router Bit|
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Average Customer Rating: (1 reviews)
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By LCHIEN (Katy TX US)
seems to work OK -
I guess my one complaint is that the bit cutting height is only barely 3/4" - it's hard to cut a through slot on 1-by material. I had to flip it over and use the tip to clean up the bottom of the hole. I could have routed the slot deeper, but I felt the countersink part was already plenty deep.