I've finally gotten the upper and lower panels that form the marquee "box" pretty much finished. Because the marquee is "dimensional" I couldn't just cut the usual slot to hold the plastic in place. I needed to cut a wide channel that followed the contour of the top and the bottom of to the marquee. It had to be about 3/4" across to allow for the forward pitch of the plastic. I had to create another template/jig thingie to route the channel. Because the marquee is angled forward I couldn't just trace it's footprint onto MDF for a jig since the actual footprint to cut was about 1" up the face, IE where the platic would exit the channel. Sorry, pretty confusing but importatnt. So I stuck a block as tall as the channel would be deep to find the actual measurement I needed to trace out for a template.
Using that measurement I offset a line on MDF to cut along. I then placed my router bit at the edge of the line and screwed down blocks to run the router base along.
That left me with a template for the top channel.
I flipped the marquee upside down to test the fit.
Here is the final top template ready to be used on the walnut top panel.
and the 3/4" straight cutting bit in the router. Unlike the blocks used to guide the edge of the router to cut the template, the channel will be cut with the bit following the edge of the template (with a top mounted bearing).