If you’ve ever tried to sand a straight line with a sanding drum, you know it’s easy to go past the line. Recently, I came up with a simple solution for this problem.
Fence. As you can see in the photo, I added a fence behind my sanding drum. I position the fence so that it only allows the drum to sand up to the line. The key is making sure the fence is long enough for the workpiece feet to contact the fence the entire way.
The drum is buried in the table and also in a notch in the fence. This allows the fence to be adjusted for different recesses.