Nope, no pile and hence no drum sander. I will probably start as you with a sanding drum and from the look of it the sanding sleeve should come right off which means easy going between grits. We'll see what I can dream up... stay tuned. Apart from dreaming about tools work is kind of slow with the carlings. Mast partners are in and a couple for skylights. The photo below is a couple of pieces old. If you look closely you can see that I've tested a couple of different notch types.