I have one of Oscar Vermeulen's PiDP-11 replicas, and the SimH simulator contained within has a virtual paper tape reader and punch. It would be pretty straig

I have one of Oscar Vermeulen's PiDP-11 replicas, and the SimH simulator contained within has a virtual paper tape reader and punch. It would be pretty straightforward to hook up something like this as the reader. Punching tape, on the other hand, seems to be pretty much impossible in the modern age. 8-bit paper tape punches never come up for sale on eBay or any other vintage computer site I've seen. And I'm not sure how feasible it is to fabricate one with a 3D printer- the real punches are like sewing machines- with thousands of little parts with timing and cams and all. Has anyone seen a DIY paper tape punch?