Aha - nice! Someone has done the work already. I need one of these comb razor attachments and was just about to start designing one from scratch.
They're about $5 from the manufacturer, but they won't ship outside US. One can print it for less than $0.50.
The design is in super overkill fine resolution, which always irks me a bit as it's redundant data. So I spent an hour removing 100k or more vertices, and cleaning it up. Hoping it fits well!
