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Chamfer Bits

We all know that chamfer bits work great for easing exposed edges. But did you know that with them you can cut dead-on miters with little setup involved? Here's how.

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Chamfer Bits

Chamfer Bits

A great way to make on the money miters. We all know that chamfer bits work great for easing exposed edges. But did you know that with them you can cut dead-on miters with little setup involved? Here's how.

As you can see in the chart below, chamfer bits come in five cutter angles for making boxes with various numbers of sides. Note that they 45 bit we show is considerably larger than the other chamfer bits. That's because we prefer to use bits capable of making a full-edge cut in 3/4"-thick stock. For such material you need to move up to the largest 45 bits generally available -- those with a cutting diameter of 2-1/2" or more.

Note also in the chart that there are two kinds of miter cuts you can make with chamfer bits: end-grain miters (for shallow boxes or frames), and edge-grain miters (for deeper boxes). In the steps that follow we'll make both types of miter cuts with a table-mounted router.


5 CHAMFER BITS AND THE MITERS THEY CUT
 ROUTER BIT (NOT ACTUAL SIZE)
 CUTTER ANGLE
11.25° 15° 22.5° 30° 45°
 NUMBER OF SIDES IN BOX
16 12 8 6 4
 END-TO-END JOINED WORKPIECES
 EDGE-TO-EDGE JOINED WORKPIECES


Continued on page 2:  End-to-End Mitering

 

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Comments (2)
8477366110
b.d.gleeson wrote:

How do you chamfer stock that is thicker than the bit depth? The bearing impedes workpiece - or am I missing something?

8/4/2013 12:26:50 PM Report Abuse
captdave1940 wrote:

I'm a pretty new woodworker, and just added a chamfer bit to my bit portfolio. Just used it o ease the joint of a box lid to the box carcas, what a great looking joint. Thanks for the article on this type of bit.

12/15/2010 09:49:20 PM Report Abuse

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