All of the Deulen Knife Sharpeners can go end to end in any combination to sharpen longer knives
Deulen 12" Planer Knife Sharpener for knives up to 15"
Sharpen planer knives up to 15" with clean, repeatable, razor‑sharp results—right in your own shop.
Invented by Dan Deulen, the original Deulen 12" Planer Knife Sharpener replaced the old machinist method with a faster, sharper, in‑shop solution. This jig gives you cleaner cuts and a razor‑sharp edge in minutes.
A precision sharpening jig engineered for consistent, repeatable results. The 12" model securely holds planer knives up to 15" long and maintains a fixed, stable angle across the entire cutting edge.
Why it works
- 12" sharpening jig — holds and sharpens planer knives up to 15" long.
- Fixed‑angle design — identical bevels on both knives with no guesswork.
- Rigid construction — no flex, no drift, no slop during the stroke.
- Full‑length support — keeps the cutting edge flat and true end‑to‑end.
- Fast, repeatable workflow — clamp, lap, repeat.
Made for woodworkers who care about their tools
Sharp knives mean cleaner cuts, less tear‑out, quieter operation, and safer work. This jig delivers professional results in your own shop.
Made in the USA
Built to the same builder‑grade standards as every Deulen tool.
➜ NOTE: The arrows pointing at the huge nicks in the knives. These were caused by nails embedded in the wood. These are before and after pics of the same knives, (before and after sharpening them.)
The arrows on the photos point at the extra shinny edge of the knives. That’s the Superior micro-bevel edge you get with the Deulen Sharpening Jig!
