I'm back to this topic ... i have tested EasyFlash3 sized case for Unicart64 and it fits !
So, it is practical to purchase somewhere the empty case and Unicart64 board will be safe.
Important: I DO NOT recommend to touch buttons by fingers, please USE PLASTIC pens etc.
The possible CASE for Unicart64 board:
Here you can see my test.
closed, inside C64 expansions port
Of course, the holes DO NOT fit for buttons and SD card, and also the EDGE connector is a little bit higher, but it is still USABLE !
Creating "homemade" holes and buttons:
This is my tip how to create "homemade" case from standart EasyFlash3 case .
I have used not suitable case for it, but I believe the same can be made for EF3 case.
More critical part is to drill the 3 holes in right position ... maybe you are able to do it better .
The buttons can be made from diodes by cutting their heads ... learned from old homemade polish BLACKBOX cartridge from 80s .
The size of holes must be the same like size of diode head. You can see that bottom of the diode is a bit larger ... so it is possible to put it there only from inner side.
And the final result here ... please don't smile too much .
The hole for SD card is really ugly, but I believe you will do it better.
Now, you can push buttons on the board safe !!!