Monday, January 27, 2014

Sand paper guide for the Auto Refinish Technician

A question that comes across every new tech's mind is what grit sand paper to use?  Here is a guide to help you out!

Blends/panel blends:
Grey scuff dry/Grey scuff softened by water preferred to reduce the chance of sand scratch swelling.
1500 Grit/1200 Grit/ 1000 Grit/800 Grit, (be wary of paint burn)

Primer Sanding, (2k),
320 Dry, 400 wet , (every shop is different, ask for there guide on this one)

Black paint:
400 Grit/600 Grit/800 Grit
Dark paint covers scracthes very well

Metallic Colors/paint:
1000 Grit/1200 Grit/1500 Grit/Grey Scuff
Very easy to get sand scratch, be careful and be smart

White Paint:
Same as the Black

Single stage paint:
400 grit

Acrylic Enamel:
400 grit

Prior to Prime:
320 Dry/Red Scuff

New Bumpers:
400 grit wet or dry or my favorite, grey scuff with soap/scuff soap

Feather Edging:
180 then 320 then 400

Buffing:
1200 Grit or Higher
Very rarely to do want to use anything lower!  i.e. run off removal

and I will post more when time permits!

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