Answers tagged "plastic"

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Use this for plastic parts where heat, haze, or smearing is a concern.

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2000 grit does not make the surface shiny

The surface looks smooth after 2000 grit but still looks dull or hazy.

Use 1500, 2000, then 3000 before polishing. After 3000, use the correct polish for the material.Wet for clear coat, plastic, resin, and similar fine finishing work.

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Can I sand a plastic storage bin?

Plastic storage bins can scratch, whiten, or smear when sanded.

For paint prep, use 320 or 400 lightly, then 600 for smoother visible areas.Dry.

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Can I sand an acrylic tub?

Acrylic tubs can turn dull or scratched if sanded with coarse grit.

Use 1000, 1500, 2000, and 3000 only for light scratches before polishing.Wet.

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Can I sand black plastic trim?

Black plastic trim can turn gray, scratched, or uneven after sanding.

Avoid sanding textured trim. For paint prep only, test 600 or finer lightly.Dry.

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Can I sand EVA foam?

EVA foam can tear, fuzz, or melt instead of sanding cleanly.

Use 220 or 320 only for light shaping, then 400 for gentle smoothing.Dry.

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Can I sand foam?

Foam can tear, crumble, or clog sandpaper when sanded aggressively.

Use 220 or 320 for shaping firm foam, then 400 for light smoothing.Dry.

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Can I sand scratches on a plastic kayak?

Plastic kayaks can fuzz, smear, or lose texture if sanded aggressively.

Use 220 or 320 for rough gouge edges, then 400 or 600 for smoother blending.Wet for finer stages.

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Can I sand vinyl plastic?

Vinyl plastic can become scratched, fuzzy, or damaged when sanded aggressively.

Use 600 or finer only for very light scuffing on hard vinyl surfaces. Avoid sanding soft flexible vinyl.Dry for light scuffing; wet only on hard surfaces where residue can be controlled.

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Can wet/dry sandpaper be used without water?

Wet/dry sandpaper can confuse customers because the name includes wet and dry.

Use dry sanding for early shaping and wood prep. Use wet sanding for fine finishing, clear coat, plastic, resin, and polishing prep.Wet or dry.

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PLA gets soft while sanding

PLA plastic can soften, smear, or lose detail during sanding.

Use 220 or 320 with light pressure, then 400 or 600 for finer prep.Dry for shaping; wet sanding can help at fine stages when the print can handle moisture.

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Plastic is hazy after wet sanding

Plastic looks cloudy or hazy after wet sanding.

Use 1000, 1500, 2000, and 3000 for haze refinement. Use 800 only when deeper marks remain.Use wet sanding with clean water on plastic when the item can safely be rinsed. Keep pressure light to reduce heat and gouging.

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Plastic melts or smears while sanding

Plastic gets gummy, smeared, or soft during sanding.

Use 320 or 400 for prep, then 600 and finer with light pressure.Wet for fine stages to control heat and residue.

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Plastic primer feels rough after drying

Plastic primer can dry gritty or rough before paint.

Use 600 for smoothing plastic primer, then 800 for finer visible prep.Dry or wet only if the primer instructions allow it.

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Plastic still feels rough

Plastic remains rough or uneven after sanding.

Use 320 or 400 for prep, then 600 and finer for a smoother finish.Wet for fine stages.

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Silicon carbide vs aluminum oxide sandpaper

Customers may not know when silicon carbide sandpaper is the right choice.

Use the grit sequence based on the surface, not only the abrasive material.Wet or dry.

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Using the assorted kit for heavy removal

It is unclear which assorted kit grits to use for heavy removal.

Use 60 or 80 for aggressive removal, 120 for controlled removal, then refine with 150, 180, and 220.Use dry sanding for most heavy removal. Use wet sanding only when the material and work area can handle water.

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What grit for ABS 3D prints?

ABS 3D prints have layer lines or rough support marks.

Use 220 or 320 for support marks, then 400, 600, and 800 for smoothing.Dry for shaping; wet for finer stages.

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What grit for ABS plastic before painting?

Paint can peel from ABS plastic if the surface is glossy or contaminated.

Use 320 or 400 for scuffing, then 600 for smoother paint prep.Dry.

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What grit for ABS plastic parts?

ABS plastic can scratch or smear if sanded with too much pressure.

Use 320 or 400 for shaping, then 600, 800, and 1000 for smoother prep.Wet for fine stages; dry can be used for early shaping.

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What grit for acrylic bathtub scratches?

Acrylic bathtub scratches can look worse if sanding starts too coarse.

Use 800 or 1000 for light scratches, then 1500, 2000, and 3000 before polishing.Wet.

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What grit for acrylic plastic?

Acrylic plastic can scratch, haze, or melt during sanding.

Use 400 or 600 for shaping, then 800, 1000, 1500, 2000, and 3000 before polishing.Wet for fine stages.

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What grit for car bumper scuff repair?

A plastic bumper scuff can show rough scratches after repair sanding.

Use 320 for rough scuffs, then 400 and 600 before primer or paint.Dry for shaping; wet can be used at 600 for finer finishing.

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What grit for craft wood before acrylic paint?

Craft wood can look fuzzy or show scratches under acrylic paint.

Use 180 for rough craft wood, then 220 or 320 before acrylic paint.Dry.

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What grit for headlight restoration?

Plastic headlights can stay cloudy or scratched after sanding.

Use 800 or 1000 for oxidation, then 1500, 2000, and 3000 before polishing.Wet.

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What grit for model kit seam lines?

Plastic model seam lines can remain visible after assembly.

Use 400 or 600 for seam removal, then 800, 1000, and 1500 for finer prep.Dry for shaping; wet for fine finishing where safe for the model.

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What grit for motorcycle fairings before paint?

Motorcycle fairings can show scratches or paint adhesion problems after sanding.

Use 400 or 600 for paint prep. Use 320 only for rough repaired spots.Dry for prep; wet can be used at finer stages.

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What grit for outboard motor cover before painting?

Paint on an outboard motor cover can peel or show scratches if the plastic or fiberglass is not prepped correctly.

Use 320 or 400 for scuffing, then 600 for smoother visible paint prep.Dry.

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What grit for PETG 3D prints?

PETG prints can gum up, smear, or keep visible layer lines during sanding.

Use 220 or 320 for layer lines, then 400 and 600 before primer.Dry; wet can help at finer stages to control heat and dust.

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What grit for PLA 3D prints?

PLA 3D prints show layer lines after sanding.

Use 220 or 320 for visible layer lines, then 400, 600, and 800 for smoother prep.Dry for shaping; wet for finer stages.

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What grit for plastic bumper before primer?

Primer may not stick well to a plastic bumper if the surface is glossy or scratched too deeply.

Use 400 or 600 before primer. Use 320 only for rough repair areas first.Dry for prep; wet can be used at 600 for finer cleaning.

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What grit for plastic bumper scratches?

A plastic bumper has scratches that remain visible before primer or paint.

Use 320 or 400 for scratch prep, then 600 for finer primer prep.Dry for shaping; wet can be used at 600 for finer finishing.

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What grit for plastic model kit seams?

Plastic model seams remain visible or get scratched after sanding.

Use 400 or 600 for seam cleanup, then 800, 1000, and 1500 for finer prep.Dry for shaping; wet for fine stages.

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What grit for plastic outdoor chairs before painting?

Paint can peel from plastic outdoor furniture when the surface is too slick.

Use 320 or 400 for scuffing, then 600 for smoother paint prep.Dry.

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What grit for plastic planters before painting?

Paint can peel from plastic planters when the surface is too glossy or dirty.

Use 320 or 400 for scuffing, then 600 for smoother visible areas.Dry.

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What grit for polishing Plexiglass edges?

Cut Plexiglass edges can look saw-marked, cloudy, or rough.

Use 400 or 600 to remove saw marks, then 800, 1000, 1500, and 2000 before polishing.Wet for fine stages.

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What grit for polycarbonate?

Polycarbonate can scratch easily and stay hazy after sanding.

Use 800, 1000, 1500, 2000, and 3000 before polishing.Wet.

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