Inspired by this blog posting and a font of Bradley Combination Ornaments, I printed some Infinity Cards.
I printed them on two sides and tried to get good registration. Here's the lockup for the first side.
To achieve registration, I followed ideas from Rummonds and hung the paper on points (basically thumbtacks poked through the tympan). To get the points in the right place, we begin by including a pair these specially machined point guides in the initial lockup. They are 36 points in diameter, made from stainless steel. After the lockup is prepared, we press the tympan down, so that the points guides pierce the tympan slightly, marking the location for the points. Then the point guides are removed and the holes where they were are filled with a 36-point brass, tilted over. This scheme makes a space so the points aren't smashed into furniture or spacing material when the bed is cranked through.
Here's the form inked up. See any mistakes? I didn't. The broad red stripes on either side are the roller bearers. I remove them before printing.
Here're several finished.
A closer shot.
Here's the flip side.
And here are a couple of details.
For a third pass, I locked up a pair of scoring rules to crease the paper where I'll want to fold it.
Note the crease impressed vertically. Towards the bottom left, you can see one of the points.
Here I've trimmed off the edges that had the holes for the points and chopped each piece into four strips. These fours stacks are (mis)organized for glueing.
Here's the result.