Dual-side Laptop (Barebones DIY)

Insert 4mm rods (wood/plastic/steel/aluminium) to the main/lid slots to make it rigid and well supported. The side 4mm holes are for air circulation and attaching custom part mounts. Micro-ATX mainboard and back plate, card slots and flex-ATX power supply locations provided. The lid has slots for passive cooling heat sink.

https://www.thingiverse.com/thing:6078560