I'm not sure if this will be any help, but there is a Fine Woodworking book by the Taunton Press called "Making and Modifying Machines". Here is a link..
I do not have my copy to hand right now, but I'm pretty sure that it contains details of how to make a timber-based drum sander with spirally round abrasive roll.
This might possibly of interest to you.
If you let me know your address on the private message facility, I could post you my copy on loan.