Sewnoma

Never! The blades are slightly oily from the start but it's never occurred to me to oil them.

I do sort wipe off lint if I see it but I don't take it apart to do so. I just sort of smear it off with my thumb and call it good.

I don't seem to have any problems with my blade sticking though. I do change my blades pretty frequently so maybe that's the difference? Next time I think I have a nick on the blade I'll have to watch and see if it's just not rotating properly!

Plumtree

I don't oil it but I brush away lint from it. I am the queen of clutz so this just screams safety hazard :-) If I were to put too much oil on and then I saw even residue on the blade I would wipe it off which at some point would bite me and I would cut myself. I also didn't know it was something I should be oiling.

Kitsie

I recently learned not to tighten the nut too much. If your blade does not turn, try to loosen it a bit.