ALTERNATE ROUTER BITS
You are not limited to using the router bits supplied with your jig. Other router bits can be used to produce a different look or to work with thicker woods. Using alternate bits can help you produce more advanced joints (inlayed dovetails, etc.). Since 1/2" shank bits are stronger and are much less prone to deflection than the 1/4" shank bits, we recommend that you use the 1/2" shank bits with the 4210 and 4212 dovetail jigs, and with the 4211 and 4213 accessory kits.
If you choose to purchase alternate
1. The dovetail bit must have a 7° |
angle. This angle matches the |
tapered fingers used to guide |
the straight bit. |
2. The sum of the diameters |
of the dovetail and straight |
bits must equal 15/16". For |
example, a 5/8" dovetail bit |
must have a 5/16" straight bit |
- the sum of both equalling |
15/16". |
3. The length of the cutter |
determines the maximum |
thickness of wood that can be |
cut. The length of the cutter on |
the dovetail bit is the maximum |
thickness of the pin board. |
The length of the cutter on the |
straight bit is the maximum |
thickness of the tail board. If |
your bits have 1" cutters, you |
can make |
with 1" thick boards. |
4. Purchase bits that will not |
cut into the template guides. |
The template guide used with |
the dovetail bit has an inside |
diameter of 21/32". Use bits |
that will fit into this dimension. |
Some larger bits might work, |
but with minimal depth (Fig. |
18A). |
5. The inside diameter of the |
template guide used with the |
straight bit is 17/32". Use |
DOVETAIL BIT
TEMPLET GUIDE
ROUTER SUB BASE
21/32"
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| DOVETAIL BIT DIAMETER |
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THERE IS A MINIMUM DEPTH OF CUT |
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WHEN THE DIAMETER OF THE ROUTER |
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BIT IS GREATER THAN THE INSIDE |
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Fig. 18A | |||||
DIAMETER OF THE TEMPLET GUIDE |
COMBINATIONS (READILY AVAILABLE)
3/4" |
| 3/16" |
5/8" |
| 5/16" |
9/16" |
| 3/8" |
17/32" |
| 13/32" |
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DOVETAIL BIT
TEMPLET GUIDE
ROUTER SUB BASE
straight bits that are smaller |
than that dimension. |
WOOD FOR
HALF-BLIND DOVETAIL BITS
The difference in using alternate bits and standard bits in making
DEPTH OF CUT FOR A
Fig. 19A
14