4556 Portable Box Joint Jig

Our Portable Box Joint Jig works by hop-scotching the jig over the work, instead of like our standard 4555 Box Joint Jig where the work hop-scotches over the jig. This allows you to safely and accurately cut larger box joints on large workpieces that are too cumbersome or dangerous to do any other way.

This product cuts any size box joint between 1/2" to 1-9/16" in stock up to 2" thick, minimum 1/2" joint depth and unlimited stock width. Includes both stationary and adjustable aluminum stops which are infinitely adjustable between 1/2" to 1-9/16" wide joints, minimum 1/2" deep. These index the jig accurately for each cut and prevent side-to-side jig movement. Includes a two piece set of replaceable MDF Sub-fences, a 12" Ultra Track aluminum fence, two built-in clamps and includes five Setup Jigs for 1/2", 3/4", 1", 1-1/4" & 1-1/2" joints.

Requires a 1/2" shank router (not supplied) as well as a 3/4" bushing and a 1/2" router bit, both sold separately. Our 5032K 3/4" brass bushing & locknut fits most routers that accept a Porter Cable style bushing. If using your own bushing, make sure the nose isn't over 3/8" long. Any 1/2" cutting diameter bit with a 1/2" shank will work, but we recommend a spiral upcut bit for best results. We offer solid carbide spiral upcut bits in various cut lengths (PN 15407 - 1" cut length, PN 15409 - 1/1/2" cut length & PN 15410 - 2" cut length), all with 1/2" shanks. Always select the shortest cut length possible. For best results, incremental passes are recommended.

Work piece is clamped vertically in a vise and the Portable Box Joint Jig hop-scotches over each cut, indexing its aluminum stops in the previous cut. You'll need to supply a 6" clamp for use when making the first and last few cuts on the part that are out of range of the built-in clamps. See video on our website.

• Our Portable Box Joint Jig works by hop-scotching the jig over the work, instead of like our standard 4555 Box Joint Jig where the work hop-scotches over the jig.
• Includes both stationary and adjustable aluminum stops which are infinitely adjustable between 1/2" to 1-9/16" wide joints, minimum 1/2" deep. These index the jig accurately for each cut and prevent side-to-side jig movement.
• Includes five Setup Jigs for 1/2", 3/4", 1", 1-1/4" & 1-1/2" joints.
• Requires a 1/2" shank router (not supplied) as well as a 3/4" bushing and a 1/2" router bit

📎 Product Documentation