I would lean towards epoxy, as plastic cement will result in a weaker joint than the original plastic. I used epoxy to fix a broken microwave door handle and its held up for the past several years.
The science pros at TKOR apply ABS slurry glue to repair cracks, creating a durable and flexible bond.
Anybody who has a 3D printer always has a ton of useless plastic lying around. Some of that plastic may be from useless baubles, but most of it is in bad prints, short bits of filament, and general ...