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Marine High-Performance Abrasives (Sandpaper)

There comes a time in our lives when we have this quest to take heavy machinery in hand. Often the job that seems like the easiest to conquer with heavy machinery is the ever popular "Power Sanding" (and of course it's counter part, hand sanding) The right equipment and a lot of patience are often the main ingredients to this undertaking. In part One we explore "sand paper"

These are general recommendations. When using paints, varnishes, coatings, etc., follow manufacturers' application instructions.

 Refinishing ApplicationRecommended Abrasive Grade
Varnish   
 Stripping old varnish60, 80 or 100 
 Between coats220 or 320
 Before final coat600
 On final coat*1200
Bottom Paint  
 Stripping old paint24, 36 or 40
 Light sanding60, 80 or 100
 Between coats (if needed)80, 100 or 120
Gelcoat  
    Stripping old gelcoat24, 36 or 40
 Heavy sanding               60, 80, 100, 120 or 150
 Intermediate sanding220 or 320     
 Finish sanding*600 or 800
Fairing Compound  
 Heavy sanding                   24, 36 or 40
 Intermediate sanding60, 80 or 100
 Finish sanding                    120, 150, 180 or 220
Epoxy  
 Heavy sanding            60, 80, 100 or 120
 Intermediate sanding180 or 220
Topside Paint  
 Stripping old paint                    36, 40 or 60
 Intermediate sanding    80, 100, 120 or 150
 Sanding prior to repainting150, 180 or 220
Primer  
 Between primer coats150, 180 or 220
Painted Wood  
 Stripping old finish36 or 40
 Intermediate sanding60, 80 or 100
 Finish sanding                   120, 150 or 180
Metal  
 Stripping old finish36 or 40
 Rust removal40, 60, 80 or 100
 Light sanding150, 180 or 220
                  

* Before compounding and/or glazing if imperfections require, or brilliant gloss is desired.

These are considered the basics, and fine tuning the selection to your needs, application, and available machinery is suggested. In other words, if your not sure, try it in a spot that won't show....
 
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