AxiDraw V3 Paper Registration Jig

I made this jig so I could swap postcards between plots without lining up the paper by eye each time. Two U-shaped pockets locate the jig against the AxiDraw’s extended outrigger struts. The crossbar and long side rail give the paper a square corner to sit against.

Check your AxiDraw

This jig was fitted to an AxiDraw V3 with extended outriggers. The reference machine measured about 419 mm across the outer edges of the struts and 386 mm between their inner edges. Each jig pocket is 17.1 mm wide × 38 mm deep. Compare your setup before printing.

Print one of each half

- Left half · 216.8 × 250 × 3 mm. This is the long L-shaped part with two sockets.

- Right half · 224.8 × 60 × 3 mm, including the two dovetail keys.

Print both STLs flat at 100% scale in millimeters. The parts are designed for support-free printing. You can print the halves separately. Rotate the short half in the bed plane if that helps it fit, and leave room for your slicer’s edge margins or brim. The assembled jig measures 433.6 × 250 × 3 mm.

Assemble and use

1. On a flat surface, lower both dovetail keys into their sockets from above. Dry-fit the seam with a straightedge against the paper-contact edge so the halves sit flat and line up.

2. Test the assembled jig on both outrigger struts. After confirming the fit, remove the jig and glue the seam with the halves held flat and the edge held straight. Let the adhesive cure.

3. Seat the jig on the struts and bring the paper gently against both stops. Check that the pen, holder, and carriage clear the jig through the intended travel, then run a placement test on scrap before plotting.