Making HP Calculator Battery Packs

Home    Up

My love of Hewlett Packard RPN calculator is well know, at least among people who put up with me.  My favorite is of course the HP41C and it;s variants.  Next on the list is the 20 series, especially the 29C.  The holy grail for me is the HP67, the handheld version of the HP97 desktop machine that I use daily at work.  Digging through stuff I found a battery case for the HP29C that I had cracked open in preparation to replacing the batteries.  I decided that this would be a good project upon which to hone my mold making and plastic casting skills.

Click on any photo to see a larger version with notes
User comments User comments User comments User comments User comments