Green Plungers

Here are some side by side images of the Hi-Tek white plastic plungers and similar but incompatible Stackpole green plungers. The position of the retaining tab on the green plungers is incompatible with the design of main black plastic housing used in the HP85 keyboard. I have added black marker pen to the retaining tab on the white plunger to make it easier to see.

Like all pictures on this page, click the image for a larger version.

Here are more detailed vews of the two types of retaining tabs. While they are a different shape, they are about the same size and after the modifications described below, the difference in shape did not present to be a problem.

Green Stackpole Plungers Modification Overview

The rest of this page has not yet been written, but the pictures are from successful modification techniques to deal with the retaining tab being in the wrong location. If you are really interested in me putting the effort to finish this page, please contact me to get me more motivated. My current focus is entirely on EBTKS.

Philip Freidin 10/26/2020

(need pictures and descriptions)

Green Stackpole Plungers Cutting the Tab

Green Stackpole Plungers Making the Sleeve

Green Stackpole Plungers Gluing the Sleeve and Tab(s)

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