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Auto Repair

Filler blocking for a straighter panel.

Shape body filler with a controlled cut, longer blocking passes, and a clean handoff into primer surfacer.

Filler shapingPanel levelingPrimer ready
Body filler leveling

What this page helps with

  • Open the repair surface Start with a firm, even cut across the filler.
  • Read the panel Long-format abrasives make highs and lows easier to see.
  • Refine before primer Finish with a consistent scratch pattern for surfacer.

The filler-blocking path in three steps.

Use the abrasive format that matches the length of the repair and the control you need.

01
Block

Shape the filler

PuroFilm long sanding strips

Long strips keep the first blocking pass even across repaired panels.

P80-P120From $23.65
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02
Level

Extend the pass

Ceramic PSA film sanding roll

Peel-and-stick roll sections support longer hand-blocking passes and custom lengths.

P120-P180From $24.99
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03
Refine

Prepare for primer

5 inch blue ceramic sanding discs

Move to a machine disc for a consistent final scratch pattern before surfacer.

P180-P240From $21.90
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Keep the block moving.

Use overlapping passes and moderate pressure so the panel stays readable.

Do not jump too far.

Step down through the scratch pattern before moving into primer prep.

Need another repair stage?

Return to the auto guide for coat removal, primer surfacer, and spot repair paths.