Plan B: use the straight-cut bit and make a fence for the router to ride against to make a straight cut. This is how I had to make channels in the wood. It sucked to do this way as setup took a while and I don't like having to use the router by hand. I would rather use it in the table (the hole you see in the worktable) and move the wood piece overtop. Doing it this way, I had to secure the brace and move the router. It worked reasonably well. You HAVE to make sure everything is secure. Using double-sided tape wasn't secure enough so I had to screw the fence piece, to the brace, to the table. The channel also had to be wide enough for the light to diffuse a little before shining through the plexi, in order to not be able to pinpoint where the LEDs are. I only had so much room to make this happen and the edge of my channel on the outside ended up being 1/8" thick. No, the edges weren't terribly strong. At the end of the day, the effect worked but man was it a lot of work to get it work. Next time I do this, I'll plan it better.