Jesper Makes Studio
The Box Joint Jig Designer
Generate a cut-ready box joint template for any wood thickness. Drop the SVG into Shaper Origin, your laser cutter, or any CNC router. Free, forever.
mm
The slot width and divider width both equal the wood thickness. That's what makes box joints work.
Title Text
Size Label
Plate Width
549mm
Plate Height
208mm
Joint Spacing
45mm
Works with Shaper Origin, most CNC routers, and laser cutters. Text exports as SVG text — convert to paths in your CAM software if needed.
A note from Jesper: I built this same jig for a video about making big planters with my wife. The trick is committing to one wood thickness — once you do that, the math just works. 45mm stock gives you 45mm fingers and 45mm gaps. Don't overthink it.