Edited January 16, 2018
at 12:01 PM
4-1/2" X 7/8" T29 Angle Grinder Zirconia High Density Flap Disc - Mixed Grit 10 Pack for $10. Normally $23 + shipping.
Pack contains the following mix:
3 pieces - 40 Grit
3 pieces - 60 Grit
3 pieces - 80 Grit
1 piece - 120 Grit
Just enter the code "freemix" and pay $10 shipping.
$1 / flap disc is a pretty good price point.
While zirconia is generally used for metals I have used them on sanding wood with great results. Note that it wasn't finish sanding but removing some dried construction adhesive, with a good mask it was flawless.
Info about Zirconia:
*Zirconia Alumina is recognized by its blue color.
*A rugged synthetic abrasive that is best suited to stock removal applications.
*The heavy duty structure requires heavier pressure to break down the self sharpening grains.
*It is ideal for heavy grinding on ferrous and non-ferrous metals and planing hard woods.
*This abrasive can last up to 5 times longer than aluminum oxide on tough applications.