Back in January, John Kohnen and I were discussing scarfing jigs and I showed the jig I used on my table saw. John said “I've been thinking about a jig (or would it be a fixture? I never can keep that straight) for using a handheld circular saw, so I don't need to clean such a wide behind the tablesaw”
I have been under house arrest these last few weeks and I have not been allowed to work on the Tolman so I am working on the long neglected Puddle Duck Canoe.
The design goals were to:
I jointed some four foot long 2x4’s on two sides and then planed the boards to 1-1/4 thick. Two of the 2x4’s will be put on the bottom to keep the jig together in case the plywood was cut though and to allow space to clamp the track to the jig. I jockeyed the track around and found that 12 inches by 45 inches was the best size for the plywood.
I clamped some scrap in the jig and gave it a whorl. As you can see from the pictures the jig worked very well.