Dura-GoldPremium Black Dry Guide Coat Kit, 7 Ounces (200 Grams) - Powder that Instantly Highlights Auto Bodyshop Repair Surface Imperfections, Identify Body Filler Pinholes, Sanding Scratches Defects

I build boats for a living. I have used chem dyes and graphite, even pencils. This stuff is wonderful. It shows everything, making it easy to sand imperfections. Typically it buffs off easily as well allowing you to go straight to buffing after final sanding grit. Careful not to spill it because it will go everywhere.

This is soooo much better then paint and appears to help keep sand paper from getting clogged as bad on epoxy paint.

messy but quantity

First time using a dry powder rather than the spray-on wet variety. WAY WAY WAY easier, better, faster, cleaner, more thorough. No fumes. Doesn't foul my media. One less VOC product I have to use and breathe. I suppose there are applications where the spray is better, maybe (I've read they're better for curvy surfaces). I just got it so I don't know about longevity except for the fact that what little I've used of it so far would have taken me 5 spray cans to accomplish. $$$ And "adhesion", that's irrelevant. But I gave the product 5 stars all around because I'm in a happy place.

Easier and more effective to use than spray type.

Works great

Works well for locating high spots in body filler. Seems to last longer than other products available. I like it.

It doesn’t take much…and works great on blocking out body filler. Sand scratches show up clear!