“ This challenge [of cutting circles] has been truly answered by the Micro Fence version of the Circle Jig. As with the Edge Guide, all the guess work has been eliminated by the inclusion of the micro dial adjuster. I had zeroed the dial for the first cut, so six revolutions and three graduations moved it by precisely the diameter of the cutter. Now the second cut, and hey, presto, the two curved edges mated perfectly. This is what I expected, but the reality of the experience was a revelation. To test the fit further, I cramped the two pieces together, and you could not see the joint line! ”

- - Robert Ingham, Furniture & Cabinet-Making Magazine, England

“ Best circle cutting jig I've ever used! I've been an avid (advanced hobby) woodworker now for several years. Several times I've needed to cut holes, rounded corners, etc. In the past I've used metal templates, acrylic pcs. and other items with routers and jig saws. By far, the best jig I've used to date is the Micro Fence. It is extremely rigid, and precise! This is not an ordinary metal tool. It is like a machinist's tool for woodworking. ”

- Dan Folz, Wheaton, IL

“ I bought into the “Micro-fence System” four years ago starting with the edge guide which I mounted on my 1 and 2 hp Dewalt plunge routers. I was impressed with its simplicity, workmanship and above all, the accuracy it gave me for joinery as well as fine inlay work. About a year later I received a commission to design and make two tables for Rideau Hall, the residence of Canada’s Governor General. Based on the level of accuracy I was able to get with the Micro-fence, the design I developed called for a series of large and small radii as well as a very large ogee detail along the front edge. The Micro-fence radius attachment performed flawlessly, I even attached it to a box beam to achieve perfect arcs from a 12’dia. circle. The ogee (eight inches across) was “shaped” out by increasing the diameter of the radii with the Micro-fence while simultaneously dropping the cove router bit. The fine Micro-fence adjustment allowed me to cut so close to the profile line that very little clean up was required.

I have come to rely on the Micro-fence system and I now regularly design furniture that would be difficult to impossible without it. My current project, a large expanding dining table has a series of shapes created by radii that have to meet precisely, Micro-fence will do it. A new series of designs that I am working on uses the Micro-fence oval attachment, I’ll keep you posted on the outcome. ”

- Michael Fortune RCA (Royal Academy of Art)

Circle Jig Attachment (If you already own the Edge-Guide)


The Circle Jig Attachment is an accessory to our Edge Guide (as distinguished from the Circle Jig Complete). If you are looking for our Circle Jig as a completely separate tool, see the Circle Jig Complete.

The Circle Jig, like our Edge-Guide, features the Micro Fence micrometer dial, which provides a means of measurement and/or adjustment. This makes the jig unique for producing even the most demanding of cuts, like those required when cutting mating radii (as in the case of a surround of solid stock on a plywood or composite table top). An aluminum sub-fence is included with every Circle Jig, allowing it to perform parallel straight cuts as seen in the thumbnail photo to the left. This set-up is useful for shelving dadoes, drawer dividers, cassette slots for audio cabinets, or even dentil mouldings.

Our Circle Jig Attachment simply slides onto the stainless steel guide shafts in place of the Edge Guide body. It transforms the assembly into a Circle Jig with a 6″ to 48″ diameter capability. It includes a 1/4″ stainless steel Center Pin. There is a 3/8″ long spike on the end of the pin that measures 5/32″ in diameter, and it taps firmly into any 1/8″ pilot hole for a remarkably secure center position. The Circle Jig Attachment features its own micrometer unit and is used for a number of other Micro Fence functions, as well (the Ellipse Kits and Clamp Interfaces). Each Circle Jig comes with an aluminum straight-line fence for parallel dadoes and an eight-page instruction booklet (you can view the instructions here).

Units *

Stop Collar Set

To memorize cut positions or pre-set where a second cut will occur. Particularly useful for mortising, fluting, inlay work and hardware installations. Comes in a set of 4.

Longer Guide Shafts

Designed for cutting larger circles. Longer reach not recommended for interface applications.

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When purchased as the Circle Jig Attachment, the package does not include any Mounting Bar assembly. This is included for whatever router you specify when you purchase the Circle Jig Complete or Micro Fence Edge Guide.

We also highly recommend using the Stabilizer Bar accessory (included with this package) for virtually any set-up with the Circle Jig. It maximizes rigidity and affords the most precise cutting possible. For larger radii, our recommendation is to employ the Stabilizer Bar/Stabilizer Bar Levelers every 24″ – 30″ to support the stainless steel rods parallel to the work surface.

“Your product is indispensable to creating

the projects I like to do.” – Kelly Karin

Our Circle Jig Complete with our Plunge Base

Circle Jig Complete with Vacuum Center


Additional information

Weight 1.8 lbs
Dimensions 16.75 × 6.375 × 2.375 in

Imperial, Metric