last time I looked (probably 5 years ago) I had a hard time finding snading disks for a tablesaw. I checked again today and by golly, they are pretty easy to find. Picture below from the woodcraft web site is of their 10" steel disk with a 5/8 hole that fits the standard arbor of a 10" table saw. It is 10" diameter and 1/8th inch thick--about as thick as a sawblade. They want 18.99 for it. Item #129272 found on their webpage at: http://www.woodcraft.com/Product/2001809/2839/Sanding-Disc-10.aspx

My sanding disk is 1/4" thick aluminum with extra bracing close to the center, so it won't flex on the arbor. I think a thicker disk is important with heavier work, but for cedar the steel disk should be wonderful.

You'll need to add a few things to this. Sandpaper is the first accessory. They make sandpaper discs which have a pressure sensitve adhesive applied to the back. Peel off the protective packaging and stick it on a clean disk. In order to clear the arbor these disks have a big hole in the center--usually about 3" diameter. Woodcraft refers to these as 10' x 3" PSA discs. 80 to 120 grit should work fine as a start.

If you are the least bit handy you can apply your own glue and use plain-back sandpaper disks. Or if you are really adventurous, you can cut your own circles from big rectangular sheets of sandpaper.

PGJ