Well, a source for various papers is Supergrit. All they do itabrasive paper. I am not sure if they have the 4/0 paper, but itcould not hurt to give them a call at 800-822-4003.
for 4/0 polishing paper, you should try Gesswein, Eisinger,Stuller.Only ask for the "Norton" 4/0 paper, nothing else!.."Gerry, the Cyber-Setter"
You may find what you need at your local auto parts store thatcarries supplies for auto body work. They have abrasive/polishingpaper in very fine grits.
Rick Copeland -- Silversmith
Please, where may I buy/order 4/0 polishing paper?
Try your local yellow pages under 'Abrasives' or 'IndustrialSuppliers'. Many of these type papers are used in dustry for amyriad of applications. Another possibility is RioGrande & Swest.
3M makes a wetordry polishing paper in very fine mesh. The 2 closestto a 4/0 (approx 2000 grit) would be the 9 micron (1200 mesh) andthen the 3 micron (4000 mesh). As a 3M distributor Santa Fe JewelersSupply carries these polishing papers. You can buy them in individualgrits or in an assortment.
Kristin @ SFJS