$89.99 Each
In stock
Ideal for use with smaller boxes and frames, making it easy to add a wide variety of strong, beautiful splines to the corners.

Rockler Router Table Spline Jig

Item #
76% of 100

Dress up your mitered corner joints and add strength, too, with the Rockler Router Table Spline Jig! This clever jig locks into a standard router table miter slot and features a sled that holds your workpiece at a 45° angle while you guide it smoothly past the router bit. The adjustable fences act as stops to position your workpiece—one setting can cut all four slots for a frame, or eight slots for a box. Try different router bits to achieve different effects—straight bits, V-groove bits, dovetail bits and more!

  • Capable of accommodating a frame with a standard 11'' x 14'' opening, or a box measuring up to 12'' x 12'' x 12''
  • Smooth-sliding tracks ensure accurate cuts and ease of use
  • Includes centering tool, which aligns the jig with the center of the router bit; stores onboard
  • Centering line on sled aligns the bit with your cut line
  • Taller fences can be added to stock ABS fences to stabilize larger frames
  • Fences are removable to accommodate taller boxes
  • Workpiece can be clamped to sled if additional support is needed
  • All adjustments are achieved with tool-free knobs
  • MDF base with durable ABS sled
  • Fits standard 3/8'' x 3/4'' miter slot
  • Instructions included
  • Fits router tables on which center of miter track is between
3-1/4'' and 6-7/8'' from center of the bit.
(1) Rockler Router Table Spline Jig
(1) Set of Instructions
More Information
Brand Rockler
Manufacturer Part Number No
Weight 4.0500
Tech Spec No
Tech Docs
Type Box Joint
Prop 65 WarningWARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

3.8 / 5.0
73 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Outstanding jig.I highly recommend for all experience levels.
The spline jig has been a great addition to my tool box.it is a simple set and adds a very pleasing accent to my projects.
August 17, 2018
1 month ago
Woodworking Experience:
Awesome product very easy to set up works as described
July 29, 2018
2 months ago
Woodworking Experience:
Love it
It's my first box and I like how the dovetail splines look. I think they really give it strength. I couldn't have done it without this jig. I highly recommend it. I still need more practice but the jig fulfills the purpose ????
My first box ??
My first box ??
June 15, 2018
3 months ago
Woodworking Experience:
June 7, 2018
over 2 years ago
Woodworking Experience:
Worth every penny.
This jig makes using spline jointery a less complicated processes. Totaly successfull right out of the box. Directions on use simple yo understand and easy to follow. Well made and versatile.
User submitted image
I made this for my grandsons12th birthday toy trucks and rubber band guns are not cool any more.
March 12, 2018
7 months ago
Woodworking Experience:
decorative cuts
Bought this fixture to be able to make decorative cuts for inlays on corners of boxes.
March 8, 2018
over 3 years ago
Woodworking Experience:
Works Great.
Followed instructions, works great and I am looking forward to using it on other projects.
February 28, 2018
7 months ago
Woodworking Experience:
works great
February 21, 2018
7 months ago
Works as advertised
Fixture was quite versatile and saved me the effort of having to make a jig. Good instructions. I want to use it next for picture frames
December 3, 2017
10 months ago
Woodworking Experience:
Just what I wanted
Being a beginner I wanted a jig to help me make some simple boxes with splines, it was easy to use, very satisfied and highly recommended.
September 30, 2017
1 year ago
Woodworking Experience:
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 23 questions Browse 23 questions and 84 answers
Why did you choose this?
Rockler Store
Looks like it will work great for splines and accents.
John K on Jul 28, 2018
Ability to use the router instead of table saw to make these joints. I believe I will achieve a cleaner cut.
Bruce C on Jul 25, 2018
Looks like it will work great for splines and accents.
John K on Jul 28, 2018
Usually do these spline cuts on the table saw. This sled will save in set up time.
Richard F on Jul 28, 2018
Ability to use the router instead of table saw to make these joints. I believe I will achieve a cleaner cut.
Bruce C on Jul 25, 2018
good price
Francis M on Jul 22, 2018
Have need for current project and homemade jig is for much larger work
Raymond E on Jul 9, 2018
Interested in building boxes at a later date. Prompted by great sales price.
RICHARD N on Jul 8, 2018
To create the nice spline cut on boxes
Gloria P on Jul 6, 2018
needed it for a project
james b on Jul 6, 2018
Anybody canmake a corner. but if you want an attractive, strong corner with minimal effort, I'd recommend this jig.
William D on Jul 2, 2018
To strengthen mitre joints and make nice contrasts.
David S on Jun 24, 2018
Makes a nice finishing touch to projects.
Tom C on Jun 18, 2018
Simple to use. It is worth the money to save my time making the jig and spend my time making projects.
Eric A on May 24, 2018
video helped make the choice
JOHN H on Apr 13, 2018
I need it.
DENNIS H on Mar 4, 2018
To make it easier to add a spline to my project
john A on Feb 22, 2018
price is good and looks simple to use.
Fidel L on Feb 21, 2018
I want to make jewelry boxes for next Christmas
John P on Feb 14, 2018
spline joints on keepsake boxes
Randy B on Feb 10, 2018
history of good products from Rockler
Dennis O on Feb 3, 2018
Add more skill level to my woodworking
Duane H on Feb 2, 2018
needed for project
Bruce M on Feb 1, 2018
i'm started to make boxes in my shop thought the jig would help give eye appeal to projects i'm doing
mark r on Jan 21, 2018
I can use it to make some great boxes
John L on Dec 12, 2017
Saw a video on Facebook demonstrating this jig.
Brad C on Dec 8, 2017
Easy way to make spline slots
Russell H on Dec 7, 2017
Is simpler than using Box, or Dovetail joints to assemble a quick box or frame.
Gary A on Dec 3, 2017
the reviews and the only one that seems more versatile than the others
William B on Dec 3, 2017
Recommend on video
William S on Nov 29, 2017
I love to make small boxes with character
John on Nov 24, 2017
upcoming project i need this for
Nancy P on Nov 21, 2017
Bought for some Christmas project to make the casing more decorative.
Jeffrey M on Nov 17, 2017
Cut spline slots
Thomas S on Nov 12, 2017
I want to build the wireless speaker box.
Mike L on Nov 9, 2017
My homemade jig wasn't getting it done as simply as this appears. Too many variables in the homemade one to ruin a great project.
Jeff M on Oct 26, 2017
To add to and enhance making boxes.
Nat H on Oct 6, 2017
To simply decorative corners on boxes
Jim H on Jul 6, 2017
I make many different kinds of boxes and wanted another way to decorate them. I have never used this to make picture frames stronger and will give that a try also.
Bill B on Jul 5, 2017
Needed a jig to add splines to small boxes.
Larry K on Apr 27, 2017
I like this spline jig because I can use it on my router table.
David D on Apr 4, 2017
Looks easy to use
James Dickey M on Mar 15, 2017
needed works well
Dave D on Mar 10, 2017
I read a good review on it.
James D on Mar 1, 2017
for a project I'm making
Susan K on Dec 11, 2016
William Y on Dec 7, 2016
good reviews and am using for a three stack desk tray
Jeff . on Nov 9, 2016
reliable accurate and good value
ken on Oct 26, 2016
to make producing boxes quick and easy
Jim P on Oct 13, 2016
To help make box joints
Michael R S on Oct 12, 2016
Really make a project look nicer on anything.
Hubert on Sep 22, 2016
Gotta have something for the future. Too early in my new retirement job to jig it myself. It was a well built tool-kudos to Rockler...
wayne y on Aug 12, 2016
Usually do these spline cuts on the table saw. This sled will save in set up time.
Richard F on Jul 28, 2018
good price
Francis M on Jul 22, 2018
Will this fit my Kreg Router Table? What is the minimum distance from the bit should the Dado track be to know if it will work?
Pablo Cruiser on May 17, 2015
BEST ANSWER: I have a Kreg router table. The spline jig from Rockler works great!
What length router bit is needed- the bits I have do not extend above the thickness of the router table and thickness of jig?
Steve on Jan 14, 2017
I have misplaced my instructions for this Item and I am unable to download them from your web site?
Verne G on Jul 3, 2017
can i do dove tail cuts with this router jig ?
A shopper on May 27, 2015
BEST ANSWER: Yes - you can use a dovetail bit to cut slots and then make the spline "keys" using the same bit. Takes a little trial and error to get the keys just right but the result is worth it.
Will this fit on my Benchdog ProMax table?
A shopper on Apr 8, 2015
BEST ANSWER: Yes, this will fit your ProMax table.
Is this jig compatible with the rockler trim routing table?
Duane C on Jul 3, 2015
Rockler Router Table Spline Jig
Rockler Router Table Spline Jig
Rockler Trim Router Table
Rockler Trim Router Table
BEST ANSWER: Probably not. The spline jig locks into a miter slot usually installed on a regular router table. The trim router table toes not have the necessary depth from the center line of the front of the table. I suppose your could use the trim router and use is as an insert to a larger table that could then accomodate the miter track for this jig. By then you might consider just buying a full size router table.
does the miter bars come with the jig?
Billy on Aug 5, 2015
BEST ANSWER: Yes. This is a great jig - I used to cut splines on the table saw. Using the router table eliminates all the chip-out, especially in brittle woods.
Any tear out issue(s) from approach the router bit from the side rather than right-to-left?
Chuck R on Aug 15, 2018
BEST ANSWER: None. I used it to do splines for grandchildren’s. Jewelry boxes and they were perfect. And I used birds eye maple and rosewood, both prone to tear out.
Can this be used with the Rockler Trim Router Table?
Clare D on Nov 24, 2017
Rockler Router Table Spline Jig
Rockler Router Table Spline Jig
Rockler Trim Router Table
Rockler Trim Router Table
BEST ANSWER: The spline jig is designed to slide in a miter slot. As the Trim Router table doesn't have a miter slot it can't work with the spline jig. Apart from that the table is also too small for this jig.
I have a Bosch Router Table. How do I prevent the jig from sliding side to side? I can't tighten it to the miter slots.
Tuan N on May 28, 2017
BEST ANSWER: Try this, add a small strip of painter's tape to the inside edge of the table miter slot. You can add more than one strip in order to increase its thickness. By trial and error you should be able to get a tight fit.
The Overview says this jig is "Capable of accommodating a frame with a standard 11'' x 14'' opening", but why won't a larger frame such as 24" X 36" work with adequate supplemental tall fences?
D. Y on May 9, 2016
BEST ANSWER: To be honest about it, I have done just that. Adding taller support fences will allow you use the jig with larger frames. Hope this helps.
Will this work with my Incra Router Table?
Jay R on Aug 16, 2015
BEST ANSWER: Don't know about the Incra table but the jig has a fair amount of adjustment built in. Center of the track should be between 3 1/4" and 6 7/8" to the center of the bit. Hope that helps.
Will this spline jig work on the cast iron general table?
Grant on Jul 13, 2015
BEST ANSWER: •Fits router tables on which center of miter track is between 3-1/4'' and 6-7/8'' from center of the bit.
Fits in standard 3/4" miter slots
will this jig work on a festool router table?
stewart H on Sep 7, 2017
BEST ANSWER: Read the last line of the "Features" for your answer.
Should I use a upcut or downcut router bit with the spllne jig?
mountainman on Apr 17, 2016
BEST ANSWER: I use an up-cut bit and find tear-out is very rare.
frank on Feb 28, 2016
Is their a video demo for cutting keys for splines?
Jim S on Jan 10, 2016
BEST ANSWER: I do not know if there is one for this specific jig, but I'm sure there are some on you tube for cutting splines.
Is the Rockler Router Table Spline Jig compatible with the Bench Dog® ProTop Contractor Portable Router Table?
Jerry on Nov 2, 2015
BEST ANSWER: Jerry, the best way to approach the answer to this question is for you to do some homework. Miter slot distances vary from one style router table to another. You need to measure yours from the center of the router bit to the inside edge of your miter slot. Once you have that measurement, you'll need to have the Table Spline Jig measured the same way: inside edge of the miter bars to the center of the router bit hole in the jig.
will this work on a jessem brand table?
Rod L on Apr 30, 2015
BEST ANSWER: I believe it should as the product is universal and will work with many different saw tables.
Will this fit a Bosch RA1181 router table?
Gregory B on Jan 28, 2018
What is the tolerance/maximum height of cut possible with this 'router table spline jig'? ie: what is the distance from the top of the laminate base to the bottom of the jig's sled. I build large box frames and like fairly deep splines to show on the sides.
bernie on Nov 24, 2017
What is the minimum size of material that can be used on this jig? If I put a .5" X .5" X 4" piece on there will the grooves still support it?
Daniel P on Jun 26, 2016