Use the correct type and grit sand paper

Thorough sanding is required to ensure optimum mechanical adhesion and to create a smooth finish. Bare surfaces, primers, undercoats and fillers need to be dry sanded in order to avoid the absorption of moisture.

Sanding between fresh topcoats and varnishes can best be executed with a fine grit wetordry sandpaper and water. For every surface use the correct sanding paper and grit.

Avoid mechanically sanding in combination with coarse sandpaper as this causes too rough sand marks. Also too much film thickness is being sanded down and consequently sufficient film build-up will not be achieved.  After sanding remove all dust and degrease once more.

TIP: Sand bare wood along the wood grain. Always sand fresh varnish layers by hand with a fine grit wetordry sanding paper and water.

Sanding bare surfaces                                                          

Sanding bare GRP/fiberglass: P-320-360 dry

Sanding bare steel:  P-60 dry

Sanding bare wood ; P180-220 dry

Sanding painted surfaces                                                          

One-component primer coats : P220-320 dry      

Two-component primer coats : P180-220 dry

Fresh one-component topcoats : P400-600 wet

Fresh twocomponent PU topcoats : P320-360 wet

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