A blue dyed liquid that when mixed with acetone and wiped on your sanding surface acts as a guide coat.
Dykem Blue Guide Coat
Guidecoat Aerosol (500ml) - View here at Capella
Body Repair Materials :: Accessories :: Mirka Dry Guide Coat Black
3M™ Dry Guide Coat
Guide Coat Black – Vinny Byrne
Dry Guide Coat 150gm
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DegLasers 38203 Black Guide Coat (2) F
GUIDECOAT TUTORIAL The secret to a flawless paint job is this
KOVAX 978-0001 Dry Guide Coat, 3.5 oz, Black
GUIDE COAT, AEROSOL, OSHA, BLACK, 333 G/L TO 2.77 LB/USG VOC, 340 G (12 OZ)
What is a Guide Coat - Renown Auto Restoration Blog
How To Use Dry Guide Coat for Sanding & Buffing
Guide Coat - Wholesale Paint Group
3M Dry Guide Coat Cartridge & Kit - 05861