The Museum of HP Calculators

HP Forum Archive 20

[ Return to Index | Top of Index ]

HP41 Battery Holder, made by additive manufacturing
Message #1 Posted by Ian Phillips on 27 Sept 2011, 6:45 a.m.

Some time ago a forum member (Jean-Michel Lecointre) lovingly created a model of his HP41 calculator using Solidworks. He posted a picture of it here in June 2007.

I had been looking for a battery holder for some time when a good friend mentioned that the company he works has there own 3D printing capability. I contacted Jean-Michel via his website and he very kindly sent me the file for the battery holder and gave me permission to use it.

The resulting battery holder function perfectly. I cobbled together my own version of the contact springs and also two anti-rattle shims. At the moment the holder is in white but I am sure it will be easy to apply some colour to the surface.

There is a picture of the part at,

The small website he created is at,

Ian Phillips

Edited: 27 Sept 2011, 6:49 a.m.

Re: HP41 Battery Holder, made by additive manufacturing
Message #2 Posted by aj04062 on 27 Sept 2011, 8:14 p.m.,
in response to message #1 by Ian Phillips


I created some latches for the Classics & others using the same method. I tried to get the battery cover for the Spice series operational, but I need to find a tougher plastic and tweak the model some more.

What is the plastic & printer manufacturer? There are a huge variety of plastics available now.

Edited: 27 Sept 2011, 8:14 p.m.

[ Return to Index | Top of Index ]

Go back to the main exhibit hall