Published on 05/23/2024 11:32 AM by JGD

I am now testing a new method to repair the lower posts. Do not worry - it does not change substantially over previous methods - it is just a simplification.

I hate gluing. I have always hated it. I always made a mess of it when I was a child and I was assembling aircraft models. A disaster. And I have improved with my skill, but just a little, and I still hate it.

The piece we designed for the lower posts had a grip on the lower part:

This grip has the thickness of the calculator keyboard circuit. If we drill the holes with a little circular motion so that there is a small room below the circuit for the grip to hold, and if we use our long lower screws (this does not work with original screws), and we press down when we screw the calculator together, then we mya not need to glue the piece down!! The piece was designed with a small inward angle - and the grip gets expanded when you introduce a long screw, pressing sideways and securing the part.

When gluing the piece down, you need to be extra careful to cover all small keyboard holes. If these are covered by glue, that key may not work and you can only disassemble the whole keyboard. If we do approve this method, the whole gluing process is not needed and there are some pieces (the keyboard support and the clamps) that are not needed anymore!!!

I also would have to slightly modify the upper post repair part to give it a stronger grip too. Let's see if this works.

You can test with your HP41 during repair - it is a non-destructive testing and you can always glue it if not satisfied!!