Answers tagged "metal"

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Use this when sanding rusted, painted, or bare metal parts.

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Can I sand a saw blade?

Sanding a saw blade can damage teeth or change cutting performance if done incorrectly.

Avoid sanding the teeth. For light surface rust on the blade body, use 400 or 600 gently.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 rust off brake rotors?

Brake rotor sanding can affect braking surfaces if done incorrectly.

For light surface rust only, use 400 or 600 lightly on non-critical cleanup areas.Dry.

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Can I sand zinc-plated hardware?

Sanding zinc-plated hardware can remove the protective plating.

Use 400 or 600 only for light scuffing before paint.Dry.

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Can I use sandpaper on marble?

Marble can scratch, etch, or become uneven if sanded with the wrong abrasive.

Do not use standard sandpaper for visible marble polishing. Use stone-specific refinishing abrasives.Wet methods are normally used for stone refinishing.

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Can sandpaper sharpen a knife?

Knife edges can be refined with sandpaper, but the angle must stay controlled.

Use 400 or 600 for edge work, then 1000, 2000, or 3000 for finer refinement.Dry or wet depending on backing and method.

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Can sandpaper sharpen chisels?

A chisel edge is dull and needs sharpening or edge refinement.

Use 400 or 600 for edge repair, then 1000, 1500, and 2000 for sharpening refinement.Dry or wet depending on the sharpening setup.

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Metal still feels rough

Metal still has roughness after sanding.

Start around 120 or 180 for roughness, then 220 and 320.Dry for initial prep; wet for finer stages.

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Scratches remain on metal after prep

Metal shows straight or uneven sanding scratches after prep.

Use 180, 220, 320, then 400 or 600 for finer prep.Dry for shaping; wet for 400 grit and finer finishing 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 a bicycle frame before painting?

A bicycle frame can peel or show scratches if old finish is not scuffed evenly.

Use 220 or 320 to scuff existing paint. Use 400 before final paint prep.Dry.

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What grit for a metal mailbox before painting?

Mailbox paint can peel when the old surface is glossy, rusty, or dusty.

Use 120 or 180 on rust spots, then 220 or 320 for paint prep.Dry.

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What grit for a painted metal door before repainting?

A painted metal door can peel again if glossy old paint is not scuffed.

Use 220 or 320 for scuffing, then 400 for smoother visible prep.Dry.

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What grit for alloy wheel curb rash?

Curb rash on alloy wheels can stay rough or show sanding lines after repair.

Use 180 or 220 for shaping light rash, then 320, 400, and 600 for prep.Dry for shaping; wet can be used at finer stages.

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What grit for aluminum boat before paint?

Paint may peel from an aluminum boat if oxidation or gloss remains.

Use 320 or 400 for oxidation and paint prep, then 600 for finer primer prep.Dry for initial prep; wet can be used at 600.

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What grit for aluminum boat before painting?

Paint can peel from aluminum boats when oxidation or old coating remains.

Use 120 or 180 for old coating edges, then 220 or 320 for primer prep.Dry for prep; wet only where the paint system allows.

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What grit for aluminum screen door before painting?

Paint can peel from aluminum screen doors when oxidation or gloss remains.

Use 220 or 320 for scuffing, then 400 for smoother visible prep.Dry.

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What grit for aluminum shutters before painting?

Paint can peel or show scratches on aluminum shutters.

Use 220 or 320 for scuffing, then 400 for smoother visible prep.Dry.

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What grit for aluminum wheel polishing prep?

Aluminum wheels can stay scratched or dull after sanding.

Use 400 or 600 for prep, then 800, 1000, 1500, 2000, and 3000 before polishing.Dry for early prep; wet for finer stages.

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What grit for aluminum window frames before painting?

Paint can peel from aluminum window frames if the surface is glossy or oxidized.

Use 320 or 400 for oxidation and scuffing, then 600 for smoother primer prep.Dry for prep; wet can be used at 600 for finer finishing.

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What grit for aluminum window frames before painting?

Paint can peel from aluminum window frames if oxidation or gloss remains.

Use 220 or 320 for scuffing, then 400 for smoother visible prep.Dry.

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What grit for barnwood?

Barnwood can be splintery, dirty, or too rough for finishing.

Use 80 or 100 for splinters, then 120 or 150 for a smoother rustic finish.Dry.

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What grit for bicycle frame before painting?

Paint on a bicycle frame can peel or show scratches when prep is uneven.

Use 220 or 320 for old paint scuffing, then 400 or 600 before primer or topcoat.Dry for shaping; wet for finer finishing stages.

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What grit for brake calipers before painting?

Brake caliper paint can fail if rust, dust, or old coating remains on the surface.

Use 180 or 220 for rough prep, then 320 for final paint prep.Dry.

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What grit for brass or copper polishing prep?

Brass or copper still shows scratches before polishing.

Use 600, 800, 1000, 1500, 2000, then 3000 before polishing.Wet for finer stages.

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What grit for brass polishing prep?

Brass can stay scratched or dull after sanding.

Use 600, 800, 1000, 1500, and 2000 before polishing.Wet for finer stages.

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What grit for cast aluminum patio furniture?

Cast aluminum patio furniture can peel or show rough corrosion under new paint.

Use 180 or 220 for corrosion spots, then 320 or 400 for smoother paint prep.Dry.

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What grit for cast aluminum?

Cast aluminum can remain rough or show uneven sanding marks.

Use 180 or 220 for rough cast texture, then 320, 400, 600, and 800.Dry for rough prep; wet for finer stages.

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What grit for cast iron rust?

Cast iron has rust spots or rough oxidation.

Use 80 or 120 for rust, then 180 or 220 for smoother cleanup.Dry.

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What grit for cleaning stainless weld discoloration?

Stainless steel near a weld can show discoloration, roughness, or scratch marks.

Use 320 or 400 for cleanup, then 600 and 800 for a finer brushed look.Dry for initial cleanup; wet can be used at finer stages.

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What grit for copper pipe before painting?

Paint may not bond to copper pipe if oxidation or gloss remains.

Use 220 or 320 for scuffing, then 400 for smoother visible prep.Dry.

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What grit for drywall corner bead?

Drywall corner bead repair can leave ridges or visible edges after sanding.

Use 150 or 180 for leveling, then 220 for final smoothing.Dry.

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What grit for galvanized metal before painting?

Paint may not stick well to galvanized metal if the surface stays slick or contaminated.

Use 220 or 320 for light scuff sanding before compatible primer.Dry.

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What grit for galvanized metal before painting?

Paint can peel from galvanized metal when the surface is slick or contaminated.

Use 220 or 320 for light scuffing, then 400 for smoother prep.Dry.

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What grit for garage door before painting?

Paint can peel or show sanding marks on a garage door.

Use 220 for scuff sanding and 320 for finer paint prep.Dry.

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