Silakka54 - Slim screwless case

This remix of the original Silakka54 case (original keyboard designer) has the following differences:

• case bottom is now solid
• case top has been integrated into the case bottom
• case sides walls has been reduced by 50%
• case walls are now shorter and matches the height of the top plate
• removed the screw holes and replaced with studs for the MCU cover
• PCB friction fits into the case
• MCU cover friction fits into case studs
• inner frame to support the pcb and top plate for outer edges

You may want to experiment with printing the mcu covers at different angles to get the optimum print quality.

I used the ironing function with ironing speed of 65mm/s and ironing flow rate of 22% with spacing of 0.15 to get a nice top surface finish.

Note: This model currently only fits the AliExpress pcb plates up to v1.2 and by removing the 3rd base plate as it is not needed.

The newer v1.3 pcb plates are slightly larger around the MCU controller.

Will be making an updated model to work with v1.3 in future.