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Dead-on dowel joints

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Jig for drilling ends and edges
2 photos with drill bit with green on them
Enlarge Image
 
You need only one alignment
mark to position this drilling
jig on a workpiece end (top)
or edge (middle). Drilling with
the two inside guides spaces
holes 1 1/4" apart.
Fat bit with hole below it
Enlarge Image
 
A 1/16" countersink keeps the hole
edges from swelling and pushing
the joint apart.

Jig for drilling ends and edges

To drill a dowel hole into the end grain of a workpiece, align a self-centering doweling jig index mark over your marked dowel location, top photo. Then drill two dowel holes to the tape at both ends on each rail.

Now repeat the process on the edge of the mating workpiece, middle photo. Moisture in glue can swell the rims of a dowel hole, pushing the pieces apart. To prevent this, bevel the hole edges with a 1/16"-deep countersink, bottom photo.

Then glue and insert dowels into either the stiles or rails. Glue the exposed dowels and joint surfaces, tap the parts together, and clamp the joints for one hour.

To make edge-to-edge joints, use the same technique to mark and drill mating edges. Place holes no closer than 1/8" from the ends to avoid breaking out the end grain while assembling the joint.


Continued on page 7:  Edge-to edge joints

 

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