Four months ago, I replaced almost all of my Norton sanding discs that I had been using with 3M. There is no contest in sanding speed and efficiency: the 3M wins.

3M Xtract Net Disc 710W Cubitron II sanding discs

A few different sources online that I read in the past 6 months show a clear sanding efficiency superiority with the 3M. More convincing for me is the actual use in my shop. It sands faster and lasts longer.

One quirk that I have with the 3M product is the progression of grit: 80, 120, 180, 22o, 240, 320. I think a more sensible progression is 80, 120, 150, 220, 320, 400, which with Norton. Why is 3M’s 240 between 220 and 320? And why not 120-150-220? I suppose 120-180-220 with 3M is probably fine but seems a bit odd to me.

On Amazon, I found $0.73/disc for a 12 pack of 6 grits, and $0.48/disc for a 50 single-grit pack.

I use the 5-inch discs on the cordless DeWalt DCW210. I attach it with a 1058 Design nozzle whose other end (1 1/4″ inside diameter) I filled inside to allow it to firmly connect to my Fein collection vac hose. I also have a handy power switch near the end of the Fein hose. Virtually all of the dust gets collected! 

I always finish off with fine hand sanding paper (such as 320 or 400) to improve the final look.

I almost like sanding now! OK, I do like it a little bit! But I love the results!