HP-41, HP-65, HP-67, HP-97 Card reader rubber wheel
thingiverse
I could not find the right size o-rings to repair my card readers and decided to 3D print a wheel. After a few iterations I came up with this design that works great in my card readers. It is a friction fit and grabs the card good enough, with nothing binding or jamming. HP-41 Card reader repair guide: https://www.keesvandersanden.nl/calculators/hp82104a_cr_repair_Geiser.php HP-97 Card reader repair guide: https://www.keesvandersanden.nl/calculators/hp97_cr_repair_Geiser.php I used flexible Ninjaflex filament (TPU) I printed two at a time so that there is time for each layer to cool down. This is crucial with a small part like this. I also printed it slow (10 mm/s) and with the cooling fan on medium. Layer height 0.2mm, two perimeters.
With this file you will be able to print HP-41, HP-65, HP-67, HP-97 Card reader rubber wheel with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on HP-41, HP-65, HP-67, HP-97 Card reader rubber wheel.