I have a HP 97 card reader apart for a rebuild and I can't tell wether I have lost a bead . I have 4 but there seems to be place for 5. On the other hand if I use all 5 spots it appears that 2 of them would make the same contact.
One of my 67's has a brass roller, not the official HP plastic one. It was missing when I was given the machine, I didn't have a spare, so I spent a little time turning a replacement from a bit of scrap brass....
I don't recomend this :-)
Quote:
One of my 67's has a brass roller, not the official HP plastic one. It was missing when I was given the machine, I didn't have a spare, so I spent a little time turning a replacement from a bit of scrap brass....
Having lost two of those tiny rolling pins during the same card reader repair, I could not imagine trying to turn one out on a lathe! Maybe if I had a micro-CNC machine and an electron microscope.... still, no.
Mike
CNC, we don't need no CNC :-)
No, I made it by hand on a Myford 7... Unlike most UK lathe owners, I didn't get this machine to make model steam engines, I got it to make spare parts and special tools for vintage computers, calculators and other electronic/mechanical devices