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Making Lock Miter Bit Joints This bit increases glue joint surface by nearly 75% compared to straight butt edge joining. Set bit to cut in the center of stock, using scrap, route, fit, and check for proper position. To be sure that you have your good face up, always start by putting a chalk mark on the face side of each board, then alternate face-up pieces and face-down pieces when routing the matching joints. Two step setup for right angle joint
One step setup for matching heavy duty glue joint
Lock miter joints increase the glue surface area by approximately 75% and make for extremely tight joints. Lock miter bits are idea for making corner cuts on square columns or boxes, since alignment and clamping are a snap. Imagine trying to make a square column 6 foot long with standard miter bits-it would be a nightmare. Since the lock miter bit is large diameter, run it with a 2-1/2 HP or larger router, using speeds in the area of 9,000 to 12,000 RPM. |
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Right Angle Joint
