Remixed QC 4x USB board enclosure

The original was nicely designed, but I didn't like how the screws head protrude out of the case so I've made this very simple remix:

• Enlarge main body's holes so you can use M3 screw directly (original design had the holes too small I had to drill it)
• Make the recess for screw-header larger, now it won't protrude out of the case after assembly.

BOM: need 4x M3 plastic screw.

Print settings: No need for support anywhere.