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SKU: BJJ-002  |  MPN: I-BOX JIG

INCRA I-BOX - Box Joint Jig For Table Saw & Router Table

Regular price $249.90

The Incra I-BOX Jig Makes Beautiful Box Joints, Fast & Easy!

To get right to the point, the new INCRA I-Box is the most advanced tool ever produced for creating a stunning variety box joints & finger joints. It features fast setup for basic joints, plus advanced capability for unique decorative joints. Its revolutionary design allows greater versatility and improved user safety compared to traditional jigs. This single jig can be used on both your table saw and your router table, and the I-Box's dual-pitch lead screw mechanics easily micro-adjust joint tightness and provide a whopping 1/8" - 3/4" range of pin widths in lumber up to 1" thick.

The advantages continue beyond the basics:

INCRA I-Box-exclusive box joints like the Center Keyed Box Joint can be used to produce symmetric patterns on a wider variety of lumber widths than traditional jigs, making it easier to adapt box joints to existing project plans. Taking the Center Keyed joint a step further, the Splined Box Joint is yet another INCRA-only decorative joint that's guaranteed to add wow-factor to your projects.

As a bonus, the I-Box can even be used to produce classic dentil moldings! Altering the spacing between cuts and height of the cutter lets you change the moulding's proportions to create a nearly infinite variety. And Nothing says "Craftsmanship" like adding solid wood hinges to your projects. The I-Box can be used in conjunction with the INCRA HingeCrafter to produce wooden hinges in four different barrel diameters and in lengths up to 10". And to make sure you get to use all of the jigs' awesome features, we've include a 1-hour instructional DVD that covers everything from basic setup to advanced decorative joinery.


The INCRA I-Box is packed with innovative features:

  • Use it on your table saw or router table to cut great looking box joints with a stacking-type dado blade, dedicated box joint blade set, or straight router bits.
  • Reversible design works on either side of the cutter Exclusive dual-pitch lead screw mechanism for fast micro-adjusting and a broad 1/8" - 3/4" range of pin widths.
  • Exclusive INCRA GlideLOCK miter bar fits standard 3/4" x 3/8" miter slots with a 0.740" - 0.762" adjustment range.
  • Front and rear blade guards; front guard also stabilizes boards vertically and is adjustable for 1/8" to 1" lumber thicknesses for box joints or even thicker for other applications.
  • The wide fence allows clamping lumber securely into position while cutting much better than hand-holding boards, especially when joining small or large lumber (hand screw clamp not included).
  • Reversible & reusable MDF sub fence dramatically reduces or eliminates tea rout.

Incra I-Box Box Joint Jig for Table Saw & Rotuer Table

INCRA I-Box is the most advanced tool ever produced for creating a stunning variety of box joints & finger joints. It features a fast setup for basic joints, plus advanced capability for unique decorative joints. This single jig can be used on both your table saw and your router table.

The I-Box in use on the table saw.

Incra's I-Box box joint jig is a precision cutting machine that makes joinery fun! This single jig can be used on both your table saw and your router table, and the I-Box's dual-pitch lead screw mechanics easily micro-adjust joint tightness and provide a whopping 1/8" - 3/4" range of pin widths in lumber up to 1" thick.

The I-Box in use on the table saw.

Yes, I said router table. The INCRA miter bar fits standard 3/4" x 3/8" miter slots.

The I-Box in use on the table saw.

The miter bar is easily adjusted for a smooth, perfect fit from above, to fit with a 0.740" - 0.762" adjustment range.

The I-Box in use on the table saw.

The indexing pin is about as versatile and easy to adjust as possible.

The I-Box in use on the table saw.

The pin is set by adjusting up against the blade or bit being used.

The I-Box in use on the table saw.

The beauty here is when used on a right-tilt saw, the adjustment stays the same, while the size of the blade set changes. Simple!

The I-Box in use on the table saw.

And a simple cutout in the jig allows the user to see down to the indexing pin with ease!

The I-Box in use on the table saw.

The next few images give only a sample of the joinery possible with the I-Box!

The I-Box in use on the table saw.
The I-Box in use on the table saw.
The I-Box in use on the table saw.

Custom hinges? Why not!

The I-Box in use on the table saw.

The possibilities are endless with Incra's I-Box Box Joint Jig!

Frequently Asked Questions

Does the Incra I-Box work on both a table saw and a router table?

Yes. The single jig is designed to cut box joints and finger joints on both your table saw and your router table, making it a versatile choice across the shop. Explore more table saw accessories.

What range of pin widths can the I-Box cut?

Its exclusive dual-pitch lead screw mechanism provides a broad 1/8" to 3/4" range of pin widths and lets you micro-adjust joint tightness for a precise fit.

How thick a board can the I-Box handle?

The I-Box cuts box joints in lumber up to 1" thick. The adjustable front guard accommodates 1/8" to 1" thicknesses for box joints, and even thicker stock for other applications.

What cutters can I use with the I-Box?

You can use a stacking-type dado blade, a dedicated box joint blade set, or straight router bits at the router table, depending on the joint you want to cut.

Will the I-Box fit my miter slot?

Yes. The exclusive INCRA GlideLOCK miter bar fits standard 3/4" x 3/8" miter slots and has a 0.740" - 0.762" adjustment range for a snug, slop-free fit.

What decorative joints can the I-Box make that other jigs cannot?

It cuts INCRA-exclusive joints such as the Center Keyed Box Joint, which produces symmetric patterns across more lumber widths, and the Splined Box Joint for added decorative effect.

Can the I-Box cut dentil molding?

Yes. As a bonus, the I-Box can produce classic dentil moldings. Altering the spacing between cuts and the cutter height changes the molding's proportions for a nearly infinite variety of looks.

Can I make wooden hinges with the I-Box?

Used together with the INCRA HingeCrafter, the I-Box can produce solid wood hinges in four different barrel diameters and in lengths up to 10".

Does the I-Box include instructions?

Yes. It includes a 1-hour instructional DVD that covers everything from basic setup to advanced decorative joinery. Note that a hand screw clamp is not included.

How does the I-Box improve safety over a hand-held setup?

Its wide fence clamps lumber securely into position while cutting, which is far safer and more accurate than hand-holding boards. Front and rear blade guards add further protection. Pair it with push blocks & featherboards for extra control.