Stop struggling with weak, glue-only miters. This 3D-printed jig is the fastest, most affordable way to add rock-solid reinforcement to your box corners. Designed to mount directly to a basic shop-made sled, it turns a difficult task into a simple, repeatable process.
Ideal for longer miter joints like boxes or columns.
Download and print with your own 3D printer.
Why This Jig Works:
Built for Accuracy: Unlike "eyeballing it" or using flimsy plastic guides, this jig provides a rigid, 45-degree cradle that keeps your workpiece perfectly square to the blade.
Simple & Cheap: Skip the expensive jigs. This 3D-printed design gives you professional results for a fraction of the cost.
Fast Setup: Screw it to your sled, align your mark, and start cutting. It’s designed for the maker who wants to spend more time building and less time measuring.
If you can build a basic plywood sled, this jig will do the rest. It’s the easiest way to get clean, accurate, and strong spline joints every single time.
