Print it now and be prepared to wrap presents!

The teeth are optimized for 0.2 mm layer height, but other layer heights should work fine. You need to make sure to print hot enough to fuse the layers well, or the spring clips will break off. I had to clean up the spring clips and sand the ledge right before the teeth (so the tape sticks better and doesn't slip when you go to cut it).

I printed with ABS. PLA should work. PLA is more stiff and brittle than ABS, which makes the teeth easier to print and the spring clips harder. PLA spring clips are more likely to break off.