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E7.01 Sanding and cleaning
Pre-Cleaning
Steel. Remove rust by sandblasting, wire brush or coarse sanding paper (P16 to P80) to
achieve a bare substrate. For rust through areas tinning is recommended. In case of larger
damaged areas it might be necessary to weld in a new sheet or to replace the whole part.
Remove any remains like scale from welding, tinning or any parting compounds and fluxing
agents thoroughly.
Cleaning
Clean any old paint (OE finish) thoroughly with water first to remove any water soluble dirt.
Clean with a suitable pre-cleaner, e.g. D837 DX330 Spirit Wipe o D845 DX310 High
Strength Degreaser. If there is any VOC legislation in force, use D842 DX380 low VOC
Cleaner or D8401 Waterborne low VOC Cleaner. If using D842, rinse the surface with T494
Envirobase thinner immediately after degreasing, then dry the panel surface.
Dry Sanding (rotary-orbital machine)
Use the following paper grades depending on the substrate. Start with the coarsest grade and
carry on down to the finest grade. Fleeces and pads are especially recommended for edges
and borders. Use a guide coat for best results:
Dry Sanding (rotary-orbital machine)
Use the following paper grades depending on the substrate. Start with the coarsest grade and
carry on down to the finest grade. Fleeces and pads are especially recommended for edges
and borders:
TM
TM
Tinned Steel
TM
E-Coat (spare
parts)
OE Finish / Repair
Coatings
Putty / Filler
Spray Polyester
Primer
Surfacer
Topcoat (blending
areas)
Clearcoat (blending
areas)
E-Coat (spare parts)
OE Finish / Repair
Coatings
Putty / Filler
Spray Polyester
Primer
Surfacer
Topcoat (blending
areas)
™ red pad, 3M Soft Pad ultrafine
™ grey pad, 3M Soft Pad ultrafine
P80-P220
™ red pad, 3M Soft Pad ultrafine
P280 - P400, 3M Scotch-Brite ™ grey pad, 3
M Soft Pad ultrafine (faultless E-Coat requires
only cleaning)
P240 - P400, 3M Scotch-Brite ™ red pad, 3M
Soft Pad superfine
Coarse sanding: P80 - P150, fine sanding:
P240 - P320
Coarse sanding: P150, fine sanding: P240 -
P320
P320 - P400, 3M Soft Pad ultrafine
P320 - P400, 3M Soft Pad ultrafine
P800 - P1500, 3M Soft Pad ultrafine, 3M
Scotch-Brite ™ pad superfine
P800 - P1500, 3M Soft Pad ultrafine, 3M
Scotch-Brite ™ pad superfine
P600 - P800, 3M Soft Pad ultrafine
(faultless E-Coat requires only cleaning)
P320 - P400, 3M Soft Pad ultrafine
NEVER USE wet sanding for putties!
NEVER USE wet sanding for putties!
P320 - P400, 3M Soft Pad ultrafine
P320 - P400, 3M Soft Pad ultrafine
P320 - P400, 3M Soft Pad ultrafine
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