hi all, im new to painting with airbush, can share how you transfer paint to cup ?
My way:-
1- direct from paint bottle to airbrsh cup.. Not efficient since too much paint melt at side of the bottle, what a waste.
2- using plastic dropper, also i feel like wasting since there are many left over on the dropper wall..

try use baby oil, my knife and nipper no rust until now, 2years++

yeah, at first time will very oily and slippery, beware my thumb cut couse of this lol, but after some time the oil will less and less..