Reply by Bill_Steele

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Posted on Drawer-Lock Bit tearout

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536 posts in 2180 days

#1 posted 04-11-2018 07:27 PM

I agree with the advice provided. I use a lock miter bit with Baltic Birch and I experience some of the same problems you mention.

You need a zero clearance fence where the entry and exit to the bit is supported. Do what Loren suggests. You might also consider getting your split fences as close as possible to the bit and then cover (double sided tape) the entire front of your fence with a 1/4” piece of MDF and then cut through it with the bit.

I think making the drawer pieces a little wide is also a good idea so that you can cut off any entry/exit chip-out you get.

Consider making some sort of 90 degree pusher block to ensure that the piece being cut is held squarely to the fence (I got this from the Leevalley website)

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