shop built coping sled

You mean like the arched stile on the top of a raised panel door?

Maybe start with how you are doing it now will get some ideas for how to deal with the tear out.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

im sure you can make one.i agree about the sleds,i have the wopodpeckers sled,it’s well made and works great but wont except wood that wide.mine will go to 5-1/2”.use that as a model and just make a bigger one.

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

If you are building frame an panel doors, what about purchasing a router bit set designed for them. They will handle the arched top also. You would also need a backer block to eliminate the tearout at the end of the cross grain cut.

-- Eric, building the dream. the "Loft"

I had to build one for coping rails on residential doors, which can be up to 11 inches or so. All you need is a solid base like 1/2” MDF, a fence that’s square to the edge and a couple of toggle clamps for holding down the work.

The key is to keep the rail square to the cut and there are numerous ways to accomplish that. In a pinch, I’ve even used a square piece of 3/4” MDF as a guide.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner