Hint: MK8 1.75mm nozzle works with 3 mm filament on the Lulzbot Mini. Even though the hole is <3mm by the threads, melted 3mm filament has no problem going through the nozzle. Great for parts interoperability. Next day 2 of these nozzles clogged on 2 Lulzbot Minis. Don't know if it's improper settings or nozzles aren't robust.