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Rockler Router Table Spline Jig

Ideal for use with smaller boxes and frames, making it easy to add a wide variety of strong, beautiful splines to the corners.
Item #
70% 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
Weight 4.0500
Type Box Joint
3.5 / 5.0
128 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Spline Jig
Made lot of drawers with 4 splines each corner edge. Huge time saver. compared to trying to get same thing done with table saw. After the initial settings worked out and pencil marking on my router table an outline of the jig bottom, I did my initial 48 spline cuts in a matter of minutes. All perfect spaced perfectly. For next project just place the jig on my penciled outline, secure with track clamps and go to work!
Haven't been disappointed in anything I've purchased from Rockler
June 29, 2020
1 month ago
Woodworking Experience:
spline jig
A real blessing to use.
June 11, 2020
1 year ago
Woodworking Experience:
Great splines
Worked well a bit small for large jobs but it gets the job done.
May 19, 2020
1 year ago
Woodworking Experience:
Great visual effects
This jig is easy to set up and use. The contrasting splines dress up the joint very nicely.
March 31, 2020
over 2 years ago
Woodworking Experience:
Spline Jig
I had made some frames and needed a way to dress them up, and this Spline Jig worked out like a champ. I was able to put some splines on the frames to dress them up and make them look better than they did with just plain wood. I used different stains to give it some pop on the frames.
February 23, 2020
4 months ago
Woodworking Experience:
Works great on my jewelry box projects and frames
December 22, 2019
6 months ago
Woodworking Experience:
Good results with little effort
Upping my miter game a little. Very easy to use. Started with dove tail splines and came out perfect first try. My friends think I have skilz.
November 3, 2019
8 months ago
Woodworking Experience:
Better Build
Prior to purchasing this spline sled, I used a home made jig and although it worked good for what I needed, the Rockler spline jig is much more flexible and accurate.
October 26, 2019
9 months ago
Woodworking Experience:
Worked great for my project
The jig worked great for the projects I was putting together. I wish it was made out of light weight metal instead of plastic as i am concerned about the plastic bowing over time.
August 18, 2019
11 months ago
Woodworking Experience:
Great jig for my shop
July 14, 2019
1 year ago
Woodworking Experience:
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 31 questions Browse 31 questions and 101 answers
Why did you choose this?
Rockler Store
only one to fit router table
MARIA D on Jun 22, 2020
To work on some projects with my Daughters
Jason W on Jun 1, 2020
only one to fit router table
MARIA D on Jun 22, 2020
Easy to use adds style to box corners
Richard P on Jun 4, 2020
To work on some projects with my Daughters
Jason W on Jun 1, 2020
I want to start building some boxes and this jig looks simple to use.
Johnny H on May 29, 2020
Finally back on sale.
Brian M on May 15, 2020
Not happy with homemade jig
Rickey S on May 10, 2020
Home made jig just isn’t working anymore
Matthew N on May 6, 2020
to make the splines in the bluetooth radio in your free plans
Michael F on May 2, 2020
looking to expand routing capabilities and for the price and convenience it wasn't worth the time to build my own jig.
Greg R on Apr 10, 2020
Wanted to add decorative/strengthening corner splines to projects.
Robert G on Apr 4, 2020
On this Jig I thought it would give me another aesthetic to my projects.
Christopher P on Feb 19, 2020
Making boxes
Lynne J on Feb 18, 2020
Looks better than my old homemade worn out unit
ROGER M on Feb 7, 2020
upgrade a basic box
jeff f on Jan 16, 2020
Easy use and I do a lot of splines
Jeremy K on Jan 9, 2020
Best value, best price
BRAD R on Jan 1, 2020
Saw good youtube videos and looked easy to use. Sale value better than me making my own.
Joe R on Jan 1, 2020
Wanted to reinforce the corners on a small lap desk I was building for my grandaughter
Stanley H on Dec 5, 2019
Making splines to add strength of mitered corners of jewelry boxes.
Earl J on Nov 18, 2019
I couldn't of made it any better than this
Robert L on Oct 23, 2019
I'm making several boxes for Christmas this year and I want to make each one unique.
RODNEY Y on Oct 20, 2019
To make splines in picture frames
Dan R on Oct 20, 2019
I’m making a trophy for my basset hound club and want this jig so I can cut some dovetail splines on the corners with my router table. Yes, it’s a Rockler router table and lift.
Don B on Oct 19, 2019
Have wanted this jig. On sale!
Larry on Oct 18, 2019
Attractive sale price.
Dan L on Oct 13, 2019
I dont want to waste my time building jigs.. this one looks better than I can build anyway!
matthew m on Oct 10, 2019
Awesome effect for all of my custom boxes and urns
Dave F on Oct 9, 2019
Sawdust on Oct 5, 2019
Worth a try at that price.
Michael K on Oct 4, 2019
I make boxes and picture frames, spline joinery insures that the work product is locked in place. I used to use a homemade jig on my table saw but the router works better for this application and is easier to change out bits for the different sized joints I make.
Derrick T on Oct 4, 2019
Making small boxes. Reasonably priced & good reviews.
K O on Jul 27, 2019
Making boxes
bobby m on Jun 24, 2019
Building boxes. $20 gift card didn't hurt.
David Q on Jun 17, 2019
Because the hand made jig I have is too limited
CHUCK P on Jun 2, 2019
I think this will be an asset to my box making.
Deanna on May 11, 2019
Joe N on Apr 19, 2019
I'm gonna make some boxes and I want to make them with spline joints. Of the spline jigs I've seen this one looks the simplest and most durable. And like all the other Rockler tools I have, I'm sure it will be up to Rockler standards.
Bob B on Mar 10, 2019
Need to make splines on my router table.
James N on Feb 24, 2019
Wanted to make some boxes with spline joints and I love the design of this jig! Rockler always has quality products! And the questions say it will work on my Kreg Router Table...
Richard C on Feb 7, 2019
I am shopping for birthday gifts for my husband
Elizabeth L on Feb 5, 2019
The spline jig I made for my table saw will not work, the miter slots are to close to the same<br />measurements from the blade and did no want to build a second one for the router table.
Mark K on Feb 4, 2019
I want to add wood decorations to my jewelry box as oppose to brass decoration or maybe add both. We will see.
Rudy S on Feb 3, 2019
Always wanted, now on sale.
Food storage bins on Feb 1, 2019
Making boom-box with Rockler boom kit.
Larry S on Dec 19, 2018
I need one...
Brian R on Nov 25, 2018
choose as a gift
Cathy F on Nov 25, 2018
For framing purposes.
Claude Wetzel E on Oct 22, 2018
Because it's been on my wish list, but finally was on sale
Nelson R on Oct 18, 2018
I was going to build a spline jig but this looked like a better choice.
Forest J. Bowman J on Oct 5, 2018
To strengthen corners of picture frames.
James D on Oct 4, 2018
Easy to use adds style to box corners
Richard P on Jun 4, 2020
I want to start building some boxes and this jig looks simple to use.
Johnny H on May 29, 2020
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
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: The overview states between 3 1/4 and 6 7/8.
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
Will this work on a table saw? Can it be made to work with some modifications?
jimsonrat j on Oct 24, 2018
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.
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.
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.
Do you get blowout as the work piece exits the router bit?
Joe R on Feb 10, 2019
BEST ANSWER: I am getting clean cuts in walnut with a nice sharp bit. I do however, find that the pressure of the jig itself is inadequate to hold the work absolutely still as it contacts and exits the bit, so I have been supplementing with clamps. Perhaps this would make a difference for you.
Will this work on a Bosch 1171 Router table?
Ken B on Mar 7, 2019
BEST ANSWER: I don't own a Bosch Router Table. But, if the Bosch table has a miter track, I don't see any reason why it wouldn't work.
What material does it use for the actual spline? I made something similar to this that I use with my table saw. Therefore, my spline gaps are 1/8" thick. Biscuits don't work for the spline material. What does anyone suggest for the spline material that will fit nicely in a 1/8" spline groove? Veneer? Layers of paper thin veneer?
Tom M on Dec 29, 2018
BEST ANSWER: I use various material depending on the look I'm going for. Most of the time is a contrasting hard wood that I have planed down or machined to the shape of the spline such as when using a dove tail bit. I've also used glued up veneers of same and contrasting hard woods to make the splines. I hope this helps!
Can this be used to cut dovetail keys?
lastr002 on May 12, 2020
BEST ANSWER: You can use a dovetail bit to cut dovetail shaped splines in the box. It shows this being done in the instruction manual located on the Rockler website under the technical document section.
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
Why do the miter slot bars not fit snugly in my Jessem router table?
Andrew L on Sep 21, 2019
BEST ANSWER: To dam loose local Rockler rep did not help unfriendly
I have a Jesse Router Table, will this spline jig work with it?
Jill R on Jun 30, 2019
BEST ANSWER: I have a woodpeckers router table, they are similar , it works in the T-slot. So I would think it will work on a Jessem
What consideration should be given to box construction (especially end connection) prior to using/placing the splines?
K O on Jun 17, 2019
BEST ANSWER: Insure the grain of the wood is in line with the direction of the spline
Will this fit a Bosch RA1181 router table?
Gregory B on Jan 28, 2018
BEST ANSWER: It has two guides that fit into a standard size table saw slot. They can be tightened to hold the jig in place during use. So, if your router table has standard 3/4 inch wide slots it should work.
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.
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
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