Case for 8x8 LED Matrix

This is a case for the LED matrix and MAX7219, where the cable connectors protrude from the top and bottom of the board like in the following link https://www.amazon.co.uk/Seamless-Cascadable-Arduino-matrix-Max7219/dp/B00GKEMQUM

Basically print the required parts. The sides are for the same side and one must be mirrored, one contains a gap for cable entry.
Joiners and joiner_ext and be used to clip them together for expansion.There are also holes to link if required for more rigidity.

all.stl - Illustrative only.
base/dual base - The mounting plate for 1 and 2 LED matrix boards respectively. This is not quite symmetrical, so there is a correct way to fit this so the top/bottom lid covers fit correctly.
bottom - Cover for the lower end - bit longer to account for the MAX7219.
top - Cover for the top.
Top and Bottom can be scaled to reduce joins and help rigidity. For example my 6 module that is currently printing is made up to three dual bases and two tops/bottoms which have