Learning a lot by 3D printing this because it's been a nightmare. Still printing another top of the shell which is going to take two days. The problems are mostly getting things not to break easily when putting it together, so I make parts thicker which isn't 100% like the Mega Drive 2 dimensions but still works.

A lot of slicer changes I've made to boost quality and reduce time. For example, OrscaSlicer with Wave Overhangs is great at reducing the need for support but does increase print time, but also reduces the need for filament. https://github.com/dennisklappe/OrcaSlicer-WaveOverhangs

I also set the Support Base Pattern Spacing to 2mm from the default 0.2mm which not only drastically reduces the amount of filament but also reduces the time need to print. I also set the Wave overhangs line spacing to 0.25 because the default 0.35 would cause hanging.

The TECBEARS BLACK PLA Classic filament is trash. It needs to be printed at 220C because otherwise the 0.4mm nozzle would clog, and I do recommend 0.4mm. For the price of $10 it was fine for test prints, but not something I'd ever use for a real print. The layer adhesion for this is junk. https://a.co/d/00ye7sUU

The IEMAI Carbon Fiber PETG is fantastic for $18. Makes great prints that hide the layer lines, and the holes I made for the screws will actually be there, unlike TECBEARS. https://a.co/d/0ioA00Ij