UJK Technology

UJK Combined Chamfer & Reamer Tool

(19 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



View AllClose

Warranty & Returns

Non-TSO brand products are covered by the warranty of their respective manufacturer.
View AllClose

19 Reviews

  • 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.

  • 5
    Chamfer & Reamer Tool

    Posted by Angie Williams on 21st Mar 2023

    I hesitated to buy this. I just got my MFT and I was afraid it would "ream" out my holes and that my dogs would not fit as snug. I have TDS-13 Low Profile Dog Stops and as well as the MTR-X triangle. The dogs that come with those fit perfectly. The chamfer this adds is great. I do recommend getting this.

  • 1
    Enlarges holes!

    Posted by Johnny Brown on 15th Mar 2023

    I thought this would be a good tool to have. I wanted the reamer to be able to use the revision dogs I ordered for the Parf Guide System, as well as other dogs with the beveled ring. I thought the reamer would be a good idea in case glue ever got into the holes. I thought it would just clean out the hole and return it to normal. I just finished making my first mft style table top and used the bevel feature. The reamer enlarged the holes so that my close fit bench dogs are much looser than before. The description should warn potential buyers the reaming action will enlarge the holes beyond 20 mm. I guess I will put the tool in my metal lathe and turn the reamer down so it doesn’t ruin the holes in future tops I’m planning to make.

  • 5
    Solid, well built

    Posted by Pedro on 6th Mar 2023

    it is pricey, but it is really well built. And it works as expected. It works better in my opinion if the hole is already a little bit over 20mm. I machined the holes 20.2mm and it works perfectly well. But I also tried it on 20 and it works. VERY handy when after applying the finish to my MDF table, the holes were not exact anymore, I opened them back with this tool and now it works. Really great.

  • 5
    UJK combined chamfer and reamer

    Posted by big bob on 3rd Feb 2023

    very specific..must have MFT table or 20mm holes. revived my 15 year old table so I can use my bench dogs again.

View AllClose