2" or 3" sanding discs...which do you prefer?

[cpd004]

There are a bunch of options on 2 or 3" sanding discs. Norton, 3M, off brand, etc. I need to clean up some welds and grind down some metal tabs in a spot that is hard to get to. A local paint shop only had 3" 3M Roloc green discs for $50. I wasn't sure what I needed and they weren't very helpful. What are you guys using and where are you getting them from? Thanks.

[dhutton]

I buy 3M 36 and 50 grit 3" green Roloc discs on eBay. You can usually find a pretty good deal. Same for the backing pads.

For grinding butt welds etc I save a lot of money on Rolocs by using one of these to do the initial grinding:

http://www.ebay.com/itm/3M-01991-Green-Corps-Reinforced-Weld-Grinding-Cut-Off-Wheel-Disc-5-Pack-/271996092394?hash=item3f543affea:g:3dgAAOSwEetWBEa a&item=271996092394&vxp=mtr

Don

[cpd004]

Thanks Don....I'll check Ebay.