HP 46/81 idler gear

[Sadsilence]

Hi Rick, Hi Duane

congratulations for your HP97 gear :-).

I tried same on HP46/81 gear (mentioned by Duane), some years ago. Without 3D printer at my side and missing CAD skills I asked a colleague, but she had to admit that her software tools are not able to create a compound gear.

So I repaired around 5 HP-46 and HP-81 machines and gave away same number of my "glued" gears over last 4 years. At least my machines are still running. Costs are below 10 $/€ per item.

As you mentioned and proved, it is not impossible to create a more professional 3D printed solution. Drawback: a lot of time and trials.

Here is a possible starting point for working gear parameters.

Best regards,

Werner