Buy a bambu P1s, a 0.4mm hardened nozzle for CF filaments, and maybe a filament dryer. You'll have a tool to spit parts out instead of a hobby in and of itself[0]. Bambu isn't the least evil company, but it's honestly just that good.

Can work offline, but you'll probably need to block it at the firewall level if you care enough about privacy.

[0]Unless that's what your looking for.