UJK Technology

UJK Combined Chamfer & Reamer Tool

(23 reviews) Write a Review
  • Two tools in one: a reamer to restore the tolerances of your 20mm worktop holes, and a chamfer that enables the use of additional bench dogs like our Power-Loc and Smart Connect dogs--plus it makes the table top much more comfortable to work on!
  • Chuck it into your favorite drill and you're off to the races.
  • An exhibit of the cut quality you can expect. Note this tool is only appropriate for MDF, HDF or melamine faced plywood.
  • The tool automatically bottoms out, leaving you with the perfect depth of chamfer every time.
  • UJK Combined Chamfer & Reamer Tool


Designed and intended for use on MDF and HDF material; not recommended for hardwood veneer plywood.

Two Tools in One: Power Reamer & Chamfer

The Parf Guide System relies on the fine tolerance fit between the dog holes and the dogs—neither too tight or too loose. Changes in humidity can make it difficult to insert or remove 20mm dogs. Machined from stainless steel, this UJK Combined Chamfer & Reamer Tool does two jobs at once.

This 2-in-1 tool featuring a 10mm hexagonal shank can be used in your favorite cordless drill chuck (use at slow speed). The reamer portion has a gentle lead in and four cutting flutes to ream the holes to a precise size. With this woodworking multi-tool, your 20mm dogs will fit snugly without wobble yet can still be removed without difficulty.

After the reamer, the chamfer tool comes into action. It cuts a neat, shallow chamfer around the top of the dog hole. This chamfer allows full use of our Power-Loc or Smart Connect Bench Connecting Dogs, as well as Parf Super Dogs or any other 20mm dog that utilizes a lip. In addition, by removing the sharp edge around the hole, it prevents damage from repeated insertion of dogs, clamps and other accessories. The chamfer features a solid tungsten carbide cutter with four adjustable cutting sides. If it ever gets dull, which is unlikely, you can always rotate the carbide insert to another side.

Note: This cutter works best in MDF, HDF or plywood with a melamine facing. We do not recommended it for hardwood veneer plywood, where the high cutting speed of a traditional woodworking router and chamfer bit with pilot bearing will provide a superior result.

Key Features

  • Stainless steel, 4-flute reamer with TC chamfer cutter
  • Restores tolerance of tight dog holes in bench tops
  • Chamfer allows full use of our Power-Loc or Smart Connect Bench Connecting Dogs, as well as UJK Parf Super Dogs
  • 10mm hexagonal shanks for a secure grip
  • Chamfer features a solid tungsten carbide cutter



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Warranty & Returns

Non-TSO brand products are covered by the warranty of their respective manufacturer.
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23 Reviews

  • 5
    MAKES an Ideal Mod to Your MFT

    Posted by G.I. Jeff on 11th Nov 2023

    This tool makes an ideal mod to your new Festool MFT (or any work bench/table w/20mm dog holes). The very slight chamfer improves inserting & removing bench dogs or accessories that use the dog holes. The reamer restores hole size if glue or paint has seeped into one or more holes. I used this tool on both of my MFTs when they were new. I then applied a hard oil finish to the bare MDF top to make them resistant to glue squeeze out, drops of project topcoats, as well as to protect against humid summer months in my non-climate-controlled shop. I suspect that this tool will last a lifetime. It’s precisely made of robust materials.

  • 5
    Chamfer/Reamer tool

    Posted by Michael Wilkins on 26th Oct 2023

    I used this tool to clean up the holes bored with the Woodpeckers Hole Boring Jig. Made a huge improvement in cleaning up the less than perfect holes made by the jig.Huge thanks.

  • 5
    UJK Combined Chamfer & Reamer Tool

    Posted by T Alan Russell on 4th Jul 2023

    Prepares your 20mm holes to accept new flush dogs

  • 5
    clean holes

    Posted by William Parks on 9th Jun 2023

    This made my MFT the way it should be made, great product!!

  • 5
    Chamfer & Reamer

    Posted by Brandon on 27th Mar 2023

    My 20mm bench top was a pain to use after excess finish found its way in the dog holes. This tool quickly and easily solved that problem.

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