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Rockler Large Ellipse Base

Item #
88% of 100

This larger base works with the Ellipse/Circle Router Jig (#27712, sold separately) for more design flexibility and ellipses with narrower proportions. The larger size increases the maximum difference between the major and minor axes from 8" to 14". In other words, the maximum length of the major axis remains 52", but the minor axis can be up to 14" shorter than with the standard base.

(1) Rockler Large Ellipse Base
More Information
Brand Rockler
Weight 3.5500
Tech Spec
  • Base includes 2 extra dovetail keys with pivot pins
  • Made of solid phenolic for easy sliding
Type Circle Cutting
4.4 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great product, easy setup, great results.
I bought this to make a custom ogee casing for an ellipse window I had installed on one of my projects. Worked perfectly and the casing turned out great.
December 22, 2019
over 4 years ago
Woodworking Experience:
Worked perfectly with the ellipse guide.
September 19, 2017
over 2 years ago
Woodworking Experience:
Good base
I love this base. You made my own arm. Works fairly well.
February 20, 2017
over 3 years ago
Woodworking Experience:
Awesome jig
Great results
October 21, 2016
over 3 years ago
Woodworking Experience:
You Just Have To Know HOW To Make It Work!
Once I figured how to work with the "play" in the slides. I enjoy the increased capacity to make longer ellipses. I made mine easier to work with by creating A MEASURED GRAPH on 3/4 inch ply. Melamine surfaced 4 x 8 creates the best surface to work on. I installed brass threaded inserts for the base and on the four corners of the 4 x 8. As for the "play" that is experienced by some users I use just slight pressure in or out on the router and I get perfect ovals and ellipses every time. Just don't mix pressure during each rotation.
July 20, 2015
over 5 years ago
Woodworking Experience:
Good Ellipse Base
I have the standard ellipse base, but I needed something larger for a telescope-related project. When I started using the larger ellipse base, I noticed that it had a lot less slop than my old ellipse base. It's made out of the same material as the old base so I suspect after a dozen uses, it will start to get some slop. An aluminum or stainless version would be nice.
October 30, 2016
over 3 years ago
Woodworking Experience:
The base allowed me to cut...
The base allowed me to cut out the coffee table top I needed but the edges were a little rough. Cleaned up pretty quick with a sander. I wish they had a base that would allow me to make even narrower elipses.
September 3, 2009
The tolerances are not super which...
The tolerances are not super which shows up when you have to cut a piece in 3-4 passes due to thickness. But 5 minutes with a power sander can clean that up and it is still far better than I could every do by hand. It does stick from time to time in elipse mode, but it you keep one hand on the jig and another on the router then you can make it work. I would buy it again. I do like the big base which helps to open up more design options.
August 14, 2009
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Why did you choose this?
Rockler Store
Some of my elliptical patterns are large
Bob H on Mar 3, 2020
wanted to make narrower ovals
Sam H on Jan 1, 2020
Some of my elliptical patterns are large
Bob H on Mar 3, 2020
Should have been supplied with the original kit!
Rob R on Jan 24, 2020
wanted to make narrower ovals
Sam H on Jan 1, 2020
Oval jig
Michael D on Aug 28, 2019
to allow larger ellipses.
Dan H. on Jul 5, 2019
The Rockler products are made of quality material to last for years. Excellent crafting tools for the avid or professional workers.
Jimmy B on May 20, 2019
for a up coming project
Charles V on Feb 22, 2019
needed one
Mike M on Apr 14, 2018
For an elliptical table project with a 14 " difference between major/min axis.
Robert C on Jan 12, 2018
need large size ovals.
Steven M H on Jul 20, 2017
Rockler, has the equipment I need to restart my business and I think very good quality
john t on Jul 5, 2017
To permit larger ellipse and circle building with the Rockler ellipse/circle jig.
Pete L on Feb 13, 2017
Cutting an elliptical track for a thread spiral graph art project.
Jeffrey S on Jan 28, 2017
Needed this for my homemade circle jig.
James E on Jan 5, 2017
Thought this would be a nice addition to the jig I just got with this same purchase.
Chuck P on Oct 28, 2016
To make larger ellipses.
Michael W on May 1, 2016
Increases capabilities.
Larry H on Mar 16, 2016
I am planning to build woodsmith demi lun table. this should make things easier
Kenneth P on Feb 22, 2016
Need it for an upcoming project
Steve R on Jan 12, 2016
again to expand my skills as a wood worker. I have many projects this will be handy for.
steven v on Jan 7, 2016
Works so well for my needs. With a little tweaking when routing I achieve a perfect link to where I started. Serves me very well!
Lamont H on Nov 17, 2015
bigger ellipse
martin r on Aug 15, 2015
Grandpa's birthday--he wanted
Kade T N on Aug 5, 2015
I have some left over cou9nter top that I plan on making into serving trays. I have all the square ones so I though that the ellipse jig would make some to give as gifts
Duaine M. C on Jul 23, 2015
I have to make some circles
Juan M on Apr 23, 2015
to broaden my woodworking abilities
Sergey B on Apr 14, 2015
Should have been supplied with the original kit!
Rob R on Jan 24, 2020
Oval jig
Michael D on Aug 28, 2019
How large of ellipse will this jig make?
s c on Jan 19, 2016
BEST ANSWER: It states on the box how large of an ellipse it'll make. I have both the small and the large one and I am sorry to say that my "honey do" list has gotten in the way of me trying them out. I know the large one states it'll make a2' X4' ellipse. I plan to use it on the tops of my arched doorways.
Does your large ellipse base come with the sliding parts that move through the base?
Shorty on Nov 18, 2015
BEST ANSWER: Yes, it comes with 2 dovetail keys that fit the larger base. One thing to note: the keys on the large base I received were fractionally wider than the keys/small base, maybe 1 to 2 MM. Not sure why they would manufacture them not to be identical. The small keys fit close enough that I wouldn't hesitate to use them on the large base.
Will this fit the Makita RP0900 router?
Lyndon on Sep 22, 2016
I need to cut much larger circles for dining tables than any of the sets, if I make my own router base arm, does this item give me everything I need to make circles and elipses with my own router base arm?
Lloyd on Aug 27, 2018
BEST ANSWER: Only if the difference between major&minor axis' is within the specs for the base plate- for instance a table 48"X42" ellipse would work, but a 48"X30" would not, because the pin would slip out of the base plate. You may as well build a base plate out of hardwood to suit your needs, and sliders with screws through the router arm for oversize projects. That said, the rockler product works great for it's size, smooth tracking and easy adjustment
Is there a way to mount the jig w/out having to drill the center hole into your project, two sided tape strong enough?
D S on Jan 17, 2016
BEST ANSWER: I have use the Jag with two-sided tape. But, you need to use a lot of it and be very gentle with spinning the router to make the ellipse. Good luck!
How big is larger base?
Lee W on May 11, 2020
BEST ANSWER: The base is 11 1/2" x 11 1/2", that should have been included in the specifications but I don't see it.
I have the Rockler Circle Cutting Jig, but not the regular / small sized Ellipse Jig. I just went straight for the larger Ellipse Jig. It doesn't come with all the necessary hardware to get started. I looked at the instructions for the regular / small sized Ellipse Jig and it looks like I need to order two 5/16-18 x 1" T-Bolts, two 5/16" Washers, and two 5/16-18 x 1" Knobs. Is this correct, Rockler? Or should they have been included in the box? Can I order these from y'all separately? Many thanks.
Stuart W on May 24, 2019
BEST ANSWER: Please contact Rockler Technical Support at 800-260-9663 to determine the best solution.
Broke dovetail keys for the elliptical router jig are thay sold separately ?
Steve on May 12, 2018
BEST ANSWER: These dovetail keys are available for $0.99 each by calling 800-376-7856 and requesting item #121714.
what is the maximum length the minor axis can be?
Tony K on Jan 19, 2016
BEST ANSWER: I don't know off hand, I used it at about 9 inches, I think it can go more.
Actually I have been looking for a smaller one to make frames for pictures of individual .
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