I decided to try some box joints and after considering which jig to use I opted to modify a fully adjustable finger joint jig published by Woodsmith/Shop Notes. The Woodsmith jig is intended to be used with a dado blade or router table and is micro adjustable for a wide range of finger thicknesses up to about 1".
[IMG]http://ift.tt/1OjEHQ6]
I don't have a dado blade so I built a backing sled the lets me slide the finger joint jig across the blade in multiple passes to cut the width of the finger.
jig1.jpgjig2.jpg
I also knocked up an ancillary jig to help locate the stops for the required finger thickness. This is simply a flush cut block that the finger thickness can be rested against to allow a saw kerf thickness to be shaved off. This shaved piece can then be used to set the stop on the sled as well as help locating the legs of the finger spacers.
jig3.jpgjig4.jpg
With minimal trial and error I was able to construct my first finger jointed box.
test1.jpg
The only real problem I had in use was finding the mending brackets used as the spacer legs being a bit too soft and bending when the leading one catches on anything.
Also glue up was a bit of a pain, but that's unrelated to the jig I suppose.
[IMG]http://ift.tt/1OjEHQ6]
I don't have a dado blade so I built a backing sled the lets me slide the finger joint jig across the blade in multiple passes to cut the width of the finger.
jig1.jpgjig2.jpg
I also knocked up an ancillary jig to help locate the stops for the required finger thickness. This is simply a flush cut block that the finger thickness can be rested against to allow a saw kerf thickness to be shaved off. This shaved piece can then be used to set the stop on the sled as well as help locating the legs of the finger spacers.
jig3.jpgjig4.jpg
With minimal trial and error I was able to construct my first finger jointed box.
test1.jpg
The only real problem I had in use was finding the mending brackets used as the spacer legs being a bit too soft and bending when the leading one catches on anything.
Also glue up was a bit of a pain, but that's unrelated to the jig I suppose.
Box joint jig
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