8 Attachment(s)
Yet another box joint jig
Some people like to collect and restore old machinery, some like to restore old furniture, some like to build new furniture, I like to build jigs :D
The last box joint jig I built required a new template board for each size router bit and the finger spacer glued into the template board had to be the EXACT size of the router bit.
I found this one after a search on the WEB and it was designed by a German woodworker and teacher. From what I can tell (looking at pictures), it appears to have some similarities to the Incra Box Joint jig.
What I like about it is that it is fully adjustable with slots and screw adjusters to suit any size router bit from 8 mm to 18 mm (may go down to 1/4" with a little modification) and the fit is also adjustable with the turn of a screw thread at the side. So no more swapping templates, backboards or spacers :2tsup:
To rout a new box joint, the procedure is as follows:
a) Fit desired router bit and rout a channel in a piece of scrap - you can label this and keep it for the next time you use that size bit so you can eliminate this step next time.
Attachment 389031
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b) Fit routed channel over fingers and adjust fingers to channel width by sliding rear panel then lock black adjusting knob
Attachment 389033Attachment 389032Attachment 389022
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c) Set fit adjuster to the width of the router bit by turning side screw to move the fingers and lock rear wing nuts
Attachment 389021Attachment 389034Attachment 389035
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d) rout slots on the ends of two bits of scrap and check fit. Adjust, if required with side screw adjuster.
Process takes less than 90 seconds if all bits and pieces are on hand.
All set up so you can now rout the box sides.
Attachment 389023
Next modification will be a sacrificial panel where the router bit goes through the jig to prevent tear out.
Cheers
Smething new about Finger joints
I was once asked if it were possible to produce finger joints at an angle with the router. My response was, I do not think it were possible. I would be interested in what would be your response especially if you are into Jig making as this type of joint IMHO could not be achieved with the router in the table mode.
1 Attachment(s)
Smething new about Finger joints