Raspberry Pi3 B case refurbished

..... well known case, but holes drilled out. found it extremely troublesome to cut threads for the board in the bottom, so i decided to put holes through to mount the board with M3x12 and nuts. furthermore, the holes to close the case were also partly locked, so i openened them too and widened for M3x16 cylindric screw heads.

.. added another modified top cover with holes for a 40x40x10mm 5 volts fan (Noctua NF-A4x10 FLX 5V).

.. had/have severe problems with quality of bottom surfaces on