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Rockler Cross Lap Jig

Quickly cut the lap joints for latticework, wine racks, torsion boxes, shoji screens and more!

Item #
56372
Rating:
88% of 100

When you need to cut multiple lap joints with uniform spacing, reach for our Cross Lap Jig. Screw it to your miter gauge and use it with your table saw and a dado stack to cut the half-lap joints for anything with a wooden grid: lattice, wine racks, grilles/mullions for glass doors, and torsion boxes for your workbenches and table tops. The jig's indexing key is width-adjustable for stock ranging from 1/8'' to 3/4'' wide. The distance from the indexing key to the blade determines the spacing of your grid, and is easily adjustable with the ergonomic knobs. Simply make your cut, push the key into the kerf you just made, then make the next cut.


Features:

  • Machines the interlocking dadoes for cross lap or half-lap joints
  • Great for latticework, wine racks, torsion boxes, shoji screens and more
  • Indexing key for fast, repeatable cuts, and precise spacing in fixed increments
  • Width of indexing key is microadjustable for stock from 1/8'' to 3/4'' wide (to match width of dado)
(1) Rockler Cross Lap Jig
More Information
Brand Rockler
Weight 2.6500
Tech Spec
  • Range of Stock Widths (width of stickwork when viewing assembled grid face-on): 1/8'' to 3/4''
  • Minimum Thickness of Assembled Grid/Lattice: 1/2''
  • Maximum Thickness of Assembled Grid/Lattice: 2x the height of your dado stack
  • Fence Material: MDF with melamine coating
  • Microadjuster Material: Glass-filled nylon
  • Indexing Pin Material: Aluminum
  • Indexing Pin Height: 0.2''
4.4 / 5.0
56 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
37
10
4
4
1
Nice jig
I bought this on sale and needed it right away for a project....didnt have the time to make my own. It worked great and am very pleased with it.
May 28, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
Great jig. Works perfectly.
User submitted image
Added Mar 15, 2020
March 15, 2020
Purchased
3 months ago
Woodworking Experience:
Intermediate
Easy to use
Very accurate when you set it up correctly.
February 26, 2020
Purchased
4 months ago
Woodworking Experience:
Intermediate
Versatile Tool
It works great as a box joint jig as well!
February 23, 2020
Purchased
4 months ago
Woodworking Experience:
Intermediate
Nice jig!
Fairly easy to put together and set up. Would’ve been nice to know what models/types of miter jig are compatible. Luckily the Kreg miter fence works. Made some neat looking jewelry boxes, and everyone likes them.
January 26, 2020
Purchased
5 months ago
Woodworking Experience:
Beginner
Perfect jig
This jig functioned better than advertised. I mated it with a spare Powermatic miter gauge. Produced perfect 1/4” box joints on my Powermatic 5hp cabinet saw. Thank you.
User submitted image
User submitted image
User submitted image
January 19, 2020
Purchased
6 months ago
Woodworking Experience:
Advanced
Easy to use
Easy to setup, operate, and provides excellent results. I used this to make dentils for floating shelves. Working on some cross lap projects and this job makes it a very simple procedure.
January 4, 2020
Purchased
5 months ago
Woodworking Experience:
Intermediate
Jig worked perfectly
Jig worked perfectly. My first try at making a torsion box went smoothly using this jig.
December 30, 2019
Purchased
5 months ago
Woodworking Experience:
Beginner
I recommend the cross lap jig it is so easy and accurate to use I should of bought it ages ago it's a pleasure to use thank you Rockler
December 24, 2019
Purchased
6 months ago
Woodworking Experience:
Intermediate
Works great for box joints
I us mine for making box joints. It does a great job
December 23, 2019
Purchased
6 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 28 questions Browse 28 questions and 95 answers
Why did you choose this?
Rockler Store
great easy to use good price.
anthony m on Jun 2, 2020
I am making lattice works
ronald s on May 29, 2020
great easy to use good price.
anthony m on Jun 2, 2020
For up coming projects. Had a good rating.
George S on May 29, 2020
I am making lattice works
ronald s on May 29, 2020
building boxes
Gary C on May 23, 2020
Making box joints with my saw will be a lot faster than with a router.
Wally D on May 20, 2020
want to make capiz shutters (like in Philippines, except for inside)
David M on May 19, 2020
GOING TO MAKE A GRAD GIFT AND IT WILL MAKE THE PROJECT MUCH EASIER, I HOPE...
Clint B on May 14, 2020
Useful
John M on May 13, 2020
Planning to make a wine rack and this will come in handy.
Samuel G on May 13, 2020
Do box joints all the time. About to build a new sled (old one needed replacing) and thought I'd try this at the sale price.
Patrick D on May 11, 2020
I need to do cross laps and I want to be sure of the accuracy that I may not get from a shop-made jig.
Paul S on May 10, 2020
it looks like it should help for half lap cuts?
Ronald M on May 10, 2020
I have a project in progress that requires cross lap joinery.
Jim W on May 9, 2020
Didn't have time to build my own and this was on sale with gift card.
Zach E on Apr 24, 2020
I WANT TO MAKE A NICE ATTRACTIVE BENCH SEAT FOR THE SUN ROOM.
ELDON on Apr 19, 2020
MAking a custom bench for the lake and bathroom.
Bill S on Apr 17, 2020
I want to safely and accurately make a display unit for handmade ceramics.
Paul M on Apr 15, 2020
For accuracy .
Bruce B on Apr 8, 2020
Making my first wine rack
Jim on Apr 6, 2020
Need it for current project
Sheryl T on Apr 5, 2020
Have a use for it
Charles R B on Apr 4, 2020
Save me time of making my own jig.
THOMAS K on Mar 31, 2020
needed an easy way to make wine racks,box finger joints and clamp racks.
wayne w on Mar 29, 2020
Ready-to-go solution with likelihood of good accuracy.
Mark S on Mar 28, 2020
Will make many projects that I want to make much easier and more precise.
George R on Mar 26, 2020
I plan to make box joints with it.
Thomas D on Mar 22, 2020
Want to build a torsion box
Kenneth A G on Mar 21, 2020
I am planning a planter shelf for a customer.
Robert B on Mar 16, 2020
Making a table project
Sydney D on Feb 22, 2020
Needed for a new project.
Rich J on Feb 9, 2020
For making more accurate cuts.
Brett E Baldin R on Feb 9, 2020
Looks like a very handy jig for my projects
Benny G on Jan 31, 2020
Wanting to make trivets out of cypress for friends
William S on Jan 27, 2020
precision
Maurice G on Jan 26, 2020
Simple jig to accomplish this task with little chance for error. Think the calculator is a nice plus.
BILL I on Jan 26, 2020
I would like to try out a Rockler jig
Edward S on Jan 11, 2020
It is something that I need for a specific project and is easier to use than my original workpiece. Also, I have a number of Rockler jigs and find that anything in the "jig department" makes Rockler my go to store.
Junior on Jan 4, 2020
I create benches with lots of cross lap joints.
Richard H on Jan 1, 2020
I wanted a jig to make different size finger joints
Andrew S on Dec 31, 2019
I was going to build a small cross Jig but It would of cost me more to build one. Great sales price! I have already built a much large cross lap Jig out of one inch thick MDF board by 42" long several months ago and it cost me a lot more money. Rockler has GREAT products!
Dan on Dec 20, 2019
I understand this is the best tool available for make multiple, accurate half lap joints.
Stacy M on Dec 16, 2019
Want to make a wine cabinet for my wife and looking forward too making some cool tables.
Timothy V on Dec 15, 2019
I feel this is a great jig
J B D on Dec 15, 2019
Ease of adjusting cuts
Cindy B on Dec 12, 2019
Husband wanted for Christmas
Gail M on Dec 12, 2019
gift
Christina C on Dec 8, 2019
For kumiko frames and box joints
John H on Dec 7, 2019
I have several projects in mind for this jig.
nsydigs on Dec 7, 2019
wife project
Thomas C on Dec 7, 2019
looks like a nice little jig, Don't see why this cant be used for making boxes.
Jason H on Dec 6, 2019
For up coming projects. Had a good rating.
George S on May 29, 2020
building boxes
Gary C on May 23, 2020
Can this jig also be used to make finger joints or box joints? It seems like it would work for them as well.
greg s on Aug 8, 2018
Can you this to make box joints with this jig?
andy v on Aug 9, 2018
BEST ANSWER: yes, but you would need to have a dado stack for this to work properly. The limit of the joints will be the size of your dado stack.
Can this jig be used with a router table that has a miter slot? What if you took multiple passes with a straight bit and increased the depth on each pass?
DONALD R on Feb 3, 2019
Is the jig fence replaceable? It seems it would not take to long to fill it up with notches.
Duane H on Aug 12, 2018
BEST ANSWER: We do not sell replacement fences. However, there are instructions and dimensions to make a new fence in the product manual.

Our Rockler T-Slot Cutter Router Bit - 5/8" Dia x 3/16" H x 1/2" Shank (Item 26099) will provide the correct slot for this jig.
Can I download the calculator for the lap jig?
Gdocanndoc G on Aug 9, 2018
BEST ANSWER: The cross lap calculator is currently hosted online only.
Can you attach the jig to a mitre sled? I have the incra express sled with 1000HD can I attach the jig to the miter guage that is in the Incra Sled?
Pete on Sep 30, 2019
BEST ANSWER: Not sure. I owned a Kreg miter gauge which just won't work, so I bought an INCRA 27V and mounted it to that.
Am a newly woodworking. For scale from 1 to 10 how hard is this item to use?
ruben on Nov 6, 2018
BEST ANSWER: At 5. Actually a walk in the park.
Can you use this with a sliding miter saw that has a depth-stop, or on table saws only (my table saw's miter gauge is pretty bad)?
Jim A on Jan 11, 2019
BEST ANSWER: No, only table saw because the cuts are made on the bottom.
Can this be used as a box joint jig as well?
DAVID C on Jan 22, 2019
Does this work on right tilt saws?
steven s on Jan 2, 2019
It looks like the spacing between dados is adjustable but can the adjustable fingers be set to cut 3/16" wide dados?
D. C on Oct 23, 2019
BEST ANSWER: Each of the adjustable fingers is almost exactly 1/16" thick but when I bring them together on my jig it measures about 1/64" thicker than 3/16". That may very from mechanism to mechanism, but that's how it is on mine.
Does this jig require a dado stack or can it be done with a single blade and multiple passes?
Brian on Oct 14, 2018
BEST ANSWER: A dado stack would seem absolutely necessary for uniform width and spacing for each successive half-lap cut. It's not obvious to me how -- after making a single-blade cut -- you would accurately slide the unit to widen the cut further with multiple passes.
The description states that the jig can make half laps in 1/8" material but other reviews state that the minimum width of the key is just over 3/16". I was wondering if you could truly cut half laps in 1/8" material with this jig?
Ryan H on Apr 18, 2020
BEST ANSWER: Ryan, I’m not much help here. I’ve not tried any cuts that narrow. I think you could if everything was set up properly and you take your time. For other, larger cuts it works quite well. Good luck and stay well!
Ron
how easy is this to attach to a Shopsmith V's Miter Gauge?
Duane M on Apr 17, 2020
BEST ANSWER: I didnt try attaching it to the shopsmith but I did find out in a hurry that shopsmith has a slightly different miter track than other table saws. I bought amiter gauge from Rockler to use with the lap jig and learned with no help from Rockler that the track is a differnet size on the shopsmith. But that said, I think the lap jig can be attached to the shopsmith miter gauge with some major modifications. After modifiying my new gauge, the lap jig works great on my shopsmith
Has anyone used this to make kumiko panels? Wondering how it supports smaller workpieces.
Melissa Swisher U on Apr 8, 2020
BEST ANSWER: I bought it for exactly that purpose but haven't had time to actually make anything yet. It is well-designed and well-constructed so it should work better than any of the home-made jigs, especially where where making reproducible angle cuts is concerned. Supporting really thin strips is up to the operator's ingenuity.
Can you cut laps on a 2X4 (2" side) with this jig?
Michael on Jan 16, 2020
BEST ANSWER: The unit comes with a sacrificial fence that is 3” tall. It has a T-slot cut into it. You could make a taller fence out of MDF and route a T-slot into that to cut laps into any reasonably sized piece of wood. It would be rather difficult to cut laps in a fairly large and heavy board simply because of the weight necessary to move the board thru the dado blade while holding it tight to the fence. That being said you probably could recut both pieces of the fence out of heavier MDF to make this easier.
I only have a table saw that doesn’t accept a dado blade. Would it possibly work without a dado or would it be a pain?
TOM C on Mar 8, 2019
BEST ANSWER: I think it would be a waste of your money. The jig is meant to be attached to the miter guide. You might be able to clamp it to the miter guide, but you wouldn’t be able to reproduce the exact width of cut or spacing you get by permanently attaching the jig to the miter guide.
I only have a table saw that doesn’t accept a dado blade. Would it possibly work without a dado or would it be a pain?
TOM C on Mar 8, 2019
BEST ANSWER: It absolutely can be done with this jig. A dado blade is not required. If you are not doing a large volume of work. You won’t find it to be a pain.
Can this jig be used to make dentil?
Craig T on Feb 20, 2019
BEST ANSWER: It's basically a dentil maker as shown in the photo above.
Can you purchase replacement fences ?
John B on Jan 29, 2019
BEST ANSWER: No. However there are instructions that come with it on how to easily make your own.
Is this gauge designed to fit the Rockler Cross Lap Jig?
Peter M on Apr 29, 2020
Rockler Cross Lap Jig
Rockler Cross Lap Jig
Rockler Precision Miter Gauge
Rockler Precision Miter Gauge
BEST ANSWER: I talked to the Rockler design group and it is designed to fit the cross lap jig directly and you don't need to attach the small miter gauge fence. You attach the large fence directly to the miter gauge.
Has anyone used this to make kumiko panels? Wondering how it supports smaller workpieces.
Melissa Swisher U on Apr 8, 2020
BEST ANSWER: Probably not great, depends on your work. The spacers would require a 0.25-0.375 inch minimum height/width, which may not be fine enough.
Regarding the key assembly, what is the height of the keys? I often create shallow half laps for picture frames and am concerned the key height would be too tall.
John A on Mar 22, 2019
BEST ANSWER: I measured with set-up block - almost exactly 1/4".
Again as others have asked without a reply. Can this be used on a Router table? I ask this as i am getting your new plunge saw, table and track and getting rid of my table Saw
Edward on Feb 27, 2019
BEST ANSWER: This jig is designed to make box joints and half-lap joints easily on the table saw or router table
What is the width of the miter gauge track slide slot?
Ben on Dec 30, 2018
BEST ANSWER: US standard saw or router track slot: 3/4" wide x 3/8" deep.
Can this be used for finger joins?
Carl on Nov 17, 2018
BEST ANSWER: No, because the edge of the wood has to be on the table saw top, it would be very hard, if not impossible, to hold a long board vertically against the jig and then slide it through the saw blade. It would also result in huge fingers. Rocker, sells a variety of finger joiner jigs.
Can this jig be used for other than pure perpendicular joints?
Jim R on Aug 13, 2018
Prop 65 WarningWARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

Prop 65 WarningWARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood.