Any ideas?

Hi there,

I believe the Qidi Tech X One2 uses 1.75mm filament, so it won’t be usable with 2.85 without extensive hotend and extruder modification.

Best,

Maddie - 3D Hubs

I think this is dependent on the kind of 3D printer extruder and nozzle you use. Most of them are not suitable to bear any other size if filament, except the one for which they are designed.

Short answer is no.