Improved tab geometry to prevent accidental disassembly of top case.

[mightyohm]

This revision of the top case modifies the tab geometry so that the tabs fit more securely into the recesses in the bottom case. I moved the face of each tab outward by 0.25mm and also modified the angle of the tabs by 10 degrees. This prevents the top case from accidentally popping off the bottom case when removing the A/V adapter from the C64. Changes were made by modifying the existing .stl in Solidworks.

[mightyohm]

This is my first pull request. My sincere apologies if I am not doing this correctly!

[mightyohm]

Sven, any feedback or comments on this PR? I think these slight tweaks improve the retention of the top case significantly.
Cheers!

[svenpetersen1965]

Hi Jeff,
Sorry for not replying. I was having too much work to take care of it back then, and then, I forgot about it.

The main problem with the case and the board is, that I didn't have a 3D printer at the time, when I developed the board, so there is no mounting hole, because no case was planned.

I have had the lid coming off on some of the A/V adapters. They did not close well, either. The problem were usually too long pins on the solder side. In some cases the snap in pins snapped off. Then I had to reprint the lid. I am aware, that they are the weakest part of the project.

What exactly was your change?

Regards,
Sven

[mightyohm]

Sven,

Thank you for your reply!

I modified the tabs as shown in the attached images.
All of the tabs were made 0.25mm longer and the angle of the tab was changed by 10 degrees.

I hope this explains the changes in sufficient detail.

Jeff