Answers tagged "scratches"

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Use this when visible scratch marks are the main symptom.

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320 grit does not remove 180 grit scratches

Scratches from 180 grit remain after sanding with 320 grit.

Use 220 or 240 before returning to 320.Dry for normal prep work.

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Can I reuse wet sandpaper?

Wet sandpaper may cut poorly after it has already been used.

Reuse only while the abrasive still feels sharp and clean. Replace it when it feels smooth, loaded, or torn.Wet.

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Can I sand a fiberglass tub?

Fiberglass tubs can become dull, scratched, or damaged if sanded too aggressively.

For small surface marks, test 1000, 1500, then 2000 wet in a hidden area.Wet.

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Can I sand a granite countertop?

Granite countertop sanding can leave dull spots or uneven polish.

Avoid sanding polished granite. For minor test work, use only 2000 or 3000 wet in a hidden area.Wet only for very fine test work.

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Can I sand a porcelain tub?

Porcelain tub surfaces can be permanently scratched by regular sandpaper.

Do not use standard sandpaper for normal porcelain tub cleaning or shine restoration.Wet sanding should only be used as part of a specific refinishing system.

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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 ceramic glaze?

Ceramic glaze can become dull, scratched, or uneven after sanding.

Avoid sanding visible glaze. For tiny high spots, test 1000 or finer wet.Wet.

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Can I sand chrome?

Chrome can scratch, dull, or flake if it is sanded incorrectly.

Avoid sanding decorative chrome. For damaged chrome that will be refinished, use 800, 1000, 1500, and 2000 carefully.Wet for fine correction work on damaged chrome.

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Can I sand composite deck scratches?

Composite decking can become lighter, fuzzy, or mismatched after sanding.

Avoid sanding visible composite decking unless the manufacturer allows it. Test 220 or finer in a hidden area.Dry.

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Can I sand laminate floor scratches?

Laminate flooring can lose its printed wear layer if sanded.

Avoid sanding laminate floors. For tiny repair prep only, test 600 or finer in a hidden spot.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 Trex decking?

Trex or similar composite boards can show permanent color or texture mismatch after sanding.

Do not sand Trex decking for normal scratches. Test hidden areas only if repair instructions allow it.Dry.

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Can I sand vinyl flooring scratches?

Vinyl flooring can lose its wear layer or show dull spots after sanding.

Avoid sanding vinyl flooring. For repair prep only, test 600 or finer in a hidden spot.Dry.

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Can I sand vinyl?

Vinyl can scratch, smear, or lose texture when sanded.

Avoid sanding finished vinyl. For repair prep only, test 400 or finer with light pressure.Dry.

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Can I skip grits?

The user wants to know whether grit steps can be skipped.

Use gradual steps such as 80, 120, 180, 220, 320, 400, 600, and finer where needed.Dry or wet depending on surface and stage.

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Can I use this sandpaper on glass?

The user wants to know whether the sandpaper is suitable for glass work.

Use ultra-fine wet sanding only: 1000, 1500, 2000, then 3000.Wet for glass-related fine work.

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Can sandpaper remove ceramic sink scratches?

Ceramic sink scratches may not disappear with normal sanding.

Start with cleaning first. For minor surface marks, test 1000, 1500, then 2000 wet in a hidden spot.Wet.

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Choosing a starting grit

It is unclear which grit to start with.

Use 60–120 for heavy removal, 150–240 for normal prep, 280–400 for fine prep, and 600–3000 for fine wet sanding or finishing stages.Use dry sanding for removal and normal prep. Use wet sanding for finer stages when the surface can safely be rinsed.

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Coarse scratches show on wood

Wood still shows visible scratch lines after prep sanding.

Use 120 to remove heavy marks, then 180 and 220 for prep.Dry.

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Deep scratches remain after 80 grit

80 grit removed material but left deep sanding scratches.

Step through 120, 180, then 220 or 320.Dry for early removal and general prep.

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Do I need a sanding block?

Hand sanding leaves waves, finger marks, or uneven pressure marks.

Use the same grit sequence, but wrap the sheet around a flat block for flat areas.Dry or wet depending on the sanding stage.

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Dry sanding leaves dust scratches

Dry sanding leaves visible dust scratches on the surface.

Use the grit needed for the task, then refine one step finer after cleaning. For prep work, move from 220 to 320 or from 320 to 400.Use dry sanding when the material must stay dry. Use wet sanding on water-safe surfaces to help carry away fine residue.

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Finger marks appear after sanding

Narrow lines or uneven areas match finger pressure after sanding.

Use the same grit to even the area, then continue finer.Dry for prep; wet for fine finishing stages.

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Finish looks patchy after changing grit

The finish looks patchy or uneven after switching grits.

Return to the last grit that leveled the surface, then move forward one step at a time, such as 180, 220, 320, and 400.Use dry sanding for most finish prep. Use wet sanding only on water-safe finishes or surfaces.

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Hand sanding leaves finger grooves

Hand sanding leaves grooves or uneven pressure marks.

Use 180 or 220 to level light grooves, then refine with 320 and 400. Use 120 only for deeper grooves.Use dry sanding for most leveling. Use wet sanding on water-safe surfaces during finer refinement.

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How do I avoid scratches from sandpaper?

The user wants to prevent sanding scratches.

Start with the least aggressive grit that works and move finer in steps.Dry for shaping and prep; wet for fine finishing stages.

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How long should I sand with each grit?

The user does not know when to stop using one grit and move to the next.

Use each grit until the surface has an even scratch pattern, then move to the next finer grit.Dry or wet depending on surface and stage.

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How to choose between 80, 120, 220, 400, 800, 1000, 2000, and 3000 grit

The user sees multiple grit options and needs a practical selection guide.

Use 80 for heavy removal, 120 for early smoothing, 220 for prep, 400 for fine prep, 800 and 1000 for fine wet sanding, and 2000 to 3000 for final refinement.Dry for removal and prep; wet for 800 grit and finer finishing stages.

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How to sand corners by hand

Corners and tight spaces are hard to sand evenly with a full sheet.

Use the same grit as the surrounding step, folded cleanly or wrapped around a small flat edge.Dry for most corner sanding; wet only for fine finishing stages.

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How to sand polyurethane drips

Polyurethane drips or runs leave raised marks in the finish.

Use 320 or 400 after the drip is fully cured. Use 600 for finer blending before another coat.Dry for most polyurethane correction; wet only if the finish instructions allow it.

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How to sand rounded edges without flattening them

Rounded edges become flat, sharp, or uneven after sanding.

Use 180 or 220 for shaping touch-up, then 320 for smoother prep.Dry for wood and general prep.

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How to sand small parts by hand

Small parts are hard to hold and can get rounded or uneven while sanding.

Use the grit required by the material, then step finer gradually.Dry or wet depending on material and finish stage.

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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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Random orbital swirl pattern remains

A random orbital sander leaves swirl marks that remain visible.

Return to the grit that removes the swirls, often 220 or 320, then refine with 400 and finer as needed.Use dry sanding for normal orbital sanding. Use wet sanding only on water-safe surfaces and with tools designed for that use.

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Sandpaper curls during wet sanding

The sheet curls or becomes harder to handle during wet sanding.

Use the selected wet-sanding grit and support the sheet with a backing pad.Wet.

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Sandpaper tears from folding

The sandpaper tears where it is folded.

The grit is not the main issue. Use the grit required for the job, but handle the sheet without hard creases.Use the sheet wet or dry as needed, but avoid folding wet sheets sharply because wet backing can tear more easily.

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