Hi Paul,

I think your application ingenious--I've used the sanding discs for table saws before with a near-zero clearance insert and a sled. Same thing only different.

But I've also used a Lion Miter Trimmer for the same task and while it is a manual operation, it is also a good tool to use for outside corner trimming of moldings. And is pretty portable.

Coping is still better for inside corners and is fairly quick and the results long lasting through the seasonal expansion/contraction.

Take care, Mike