Following the design of my Original, Print In Place Spirograph model - [https://makerworld.com/en/models/1862885-spirograph#profileId-1992701](https://makerworld.com/en/models/1862885-spirograph#profileId-1992701), I've designed an A4 Version that fits together using a pair of M4 x 50mm Machine Screws in the hinges. Alternatively, the Hinge Pins supplied can be used. I printed these separately with a 5mm Brim.

The two design issues from the original, 40 year old design I wanted to address were -

1. To stop the frame from moving as the pins provided never worked.
2.  To stop the rotating disc lifting while rotating.

This design also address both issues, with a hinged edge that clamps the paper tightly and a thin cover over the frame's teeth.

Happy Printing.