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Maker Challenge

Grit Ladder

Feel and see how sanding grits change a surface in sequence.

All Maker Challenges
First grit
look for scratchesNext grit
compare againFinal check
same light
Change one grit at a time and check the prepared sample after each step.

Look for: What changes when you move to the next grit?

What you need

  • Scrap board
  • 80, 120, 180, and 220 grit abrasive
  • Pencil
  • Dust brush

Try it

  1. Divide the board into four labeled zones.
  2. Sand each zone with its matching grit.
  3. Brush off dust.
  4. Compare scratches with side light and fingertips.
Look closely

What changed?

Skipping grits can leave deeper scratches behind.

Make it easier

Use only 120 and 220 grit.

Try another way

Add a finish sample after adult label review.