220 puts a few of the filaments I have on order from Global FSD just barely out of range (Specifically the Porolay series is recommended to print at 225-235 degrees)

An important part for filament compatibility is how does the MOD-t temperature calibration process work? Does it run the extruder servo while slowly adjusting the heat up and down until it 'feels' the filament start to push through the nozzle at the right rate through the servo's feedback? If so then elastic-type filaments might completely throw the process off, even if they would otherwise print fine.

Pretty cool to find out that the nozzle is steel though.