HOPPER AND STACKER GEARS DISINTEGRATED WITH AGE
Two gears inside the IBM 2501 card reader, a part of the Vintage Computing Federation's InfoAge Museum 1130 system, had turned brittle and disintegrated due to the effects of age on the materials IBM chose.
These gears are plastic rings that mount on metal disks. They power the feed mechanism for the card input hopper and the joggler mechanism for the card output stacker.
ORDERED STEREOLITHOGRAPHY PRINTING IN TOUGH RESIN
I chose a tough resin material, printed using SLA, which has accuracy to 0.2mm on a part that is around 100mm in diameter. This should be accurate enough and strong enough to turn the mechanisms involved in the 2501. These parts should arrive in early April where I can mount them on the metal disks and test them out in the card reader.
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