HP97 printer gear replacement

[Kees Bouw]

(12-15-2021 03:54 PM)wbvreeuwijk Wrote:  I recently 3D-printed a few of these gears and they seem to work ok. (the top ones are what was left of the original gears :-)

3D printing sounds good. I think that HP manufactured this specific gear from plastic for a reason and that replacing it by a metal one may not be a good idea. Apart from that I believe in restoring calculators (and other equipment as well) as close to the original as possible.