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DMT Diafold Diamond Flat Folding File, Extra-Coarse

DMT

DMT Diafold Diamond Flat Folding File, Extra-Coarse

  • Diamond file
  • In-use sharpening
  • Multiple grits
  • Field sharpening
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Is the DMT Diafold Diamond Flat Folding File, Extra-Coarse worth it?

Yes, for the right buyer. The DMT Diafold Diamond Flat Folding File, Extra-Coarse ranks #8 in our Best Drawknife 2026 list (best sharpening). Its biggest strength: diamond files sharpen drawknives without removing them from the shaving horse -- sharpen in place. The main caveat: less effective for major edge repair than a bench stone.

Overview

What the DMT Diafold Diamond Flat Folding File, Extra-Coarse does well

Best drawknife sharpening tool. The highlights are diamond files sharpen drawknives without removing them from the shaving horse -- sharpen in place and no water or oil required -- correct for green wood shop use where liquids create mess. One caveat, less effective for major edge repair than a bench stone.

Specs that matter

Key features

  • Diamond file
  • In-use sharpening
  • Multiple grits
  • Field sharpening
The trade-offs

Pros & cons

Pros

  • Diamond files sharpen drawknives without removing them from the shaving horse -- sharpen in place
  • No water or oil required -- correct for green wood shop use where liquids create mess
  • Multiple grit options for coarse reshaping and fine honing
  • The correct field-sharpening method for drawknives during an active shaping session

Cons

  • Less effective for major edge repair than a bench stone
  • Diamond files wear over time
Fit check

Should you buy the DMT Diafold Diamond Flat Folding File?

Think twice if this matters to you

  • Less effective for major edge repair than a bench stone
  • Diamond files wear over time
Where it ranks

Featured in 1 best-of list

ListRank
Best Drawknife 2026· Best Sharpening#8 / 8
Cross-shop

Alternatives to the DMT Diafold Diamond Flat Folding File, Extra-Coarse

Products ranked near it in our research, each better for a slightly different buyer.

Buying advice: woodworking

  1. Clamps, a combination square, a good saw and a drill cover most beginner projects.
  2. You can never have too many. Bar clamps handle wide glue-ups; quick-grip clamps are fast for smaller work.
  3. Standard wood glue suits indoor projects. Water-resistant glue suits outdoor work and cutting boards.
  4. Oils are easy to apply and repair. Polyurethane and varnish protect tabletops and floors better.
  5. Eye and hearing protection and dust collection matter from the first project. Lay oily rags flat to dry to prevent fires.

Read the full guides

Answers

DMT Diafold Diamond Flat Folding File, Extra-Coarse: common questions

Is the DMT Diafold Diamond Flat Folding File, Extra-Coarse worth buying?

Yes, for the right buyer. The DMT Diafold Diamond Flat Folding File, Extra-Coarse ranks #8 in our Best Drawknife 2026 list (best sharpening). Its biggest strength: diamond files sharpen drawknives without removing them from the shaving horse -- sharpen in place. The main caveat: less effective for major edge repair than a bench stone.

What are the downsides of the DMT Diafold Diamond Flat Folding File, Extra-Coarse?

The main trade-offs owners and reviewers point to: less effective for major edge repair than a bench stone; diamond files wear over time.

What are the key features of the DMT Diafold Diamond Flat Folding File, Extra-Coarse?

Diamond file, In-use sharpening, Multiple grits and Field sharpening.

What are the best alternatives to the DMT Diafold Diamond Flat Folding File, Extra-Coarse?

Worth comparing: Koch Industries 10-Inch Drawknife, Two Cherries 500-2210 Inshave for Rough Shaping and Shaving Horses, Lap Shaves and Other Woodland Vices. Each ranks near it in our research for a slightly different buyer.

Where can I buy the DMT Diafold Diamond Flat Folding File, Extra-Coarse?

It's sold on Amazon. Prices and stock change often, so check the current listing before you buy, our link takes you straight to it.

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