On Monday, February 15, 2016 at 10:30:50 PM UTC-5, wrote:
Is there any reason that PPG concept can't be sanded dry? I need to knock down some bad orange peel (because I'm still learning how to paint). I was thinking about using some 500 to knock down most of the orange peel, and then move to finer grits (wet) take out the sanding scratches before polishing. It seems like everyone is sanding wet, but why? It's much harder to see what you've done because everything gets covered with white goo. If I sand dry, I can blow the dust away and see what I've got immediately. I do know about guide coat and all of that, but I'm wondering what can go wrong if I make the first pass with 500 dry, and then switch to a finer grit wet?

Thanks,

John

if you dry sand with 320 or finer, you'll sand for 10 seconds and your paper will be loaded/chalked up. you must wetsand young padawan. for wet sanding i recommend a plastic soda bottle with several small holes drilled in the cap. that allows you to use less water wit the same results. also, get a squeegee from lowes or walmart. that gets the surface clean and dry in seconds without all the mess. google "california water blade" and get that kind of squeegee, as you can clear a curved surface much easier, and check your progress more often.

-andy