I was thinking about making archtop backs and bellies a while back and I came across an arching pattern from Andrew Mowry's website. This set me to pondering on the best way to do the initial carving on one of these and I decided it called for an overhead pin router. Having previously made the front for a Les Paul guitar, I know how much work is involved and how difficult I found it.
|Pin height adjuster|
The router is mounted one third of the way across the width of the table to allow wider pieces to be worked on. I also added a safety STOP switch and a box for the spare pins etc.
|Underside of the holding board|
The idea will be to start with the pin fully retracted and take the thickness down to 17mm. Then the pin is raised by 5mm, and the router cutter is lowered to 16mm and the first contour is cut. Then the cutter goes down to 15mm and the pin up another 5mm and cut again...and so on.
Now to see if the theory works out in practice!
|Arching Template sets|