Re: How can I fix a bent needle??
Depends how severe the damage is. If it's bent to the degree it is no longer round you have to reshape the whole needle tip, not just staighten it. I would anyway keep a spare needle for emergencies.
To straighten a bent needle tip: Straighten as much as you can with your nails/fingers or any small tools suitable before you remove it or you will damage the nozzle as well. Put the needle on a hard, smooth surface - like glass, use a metal tube - like the airbrush handle, and roll that over the needle tip to straighten. Allow the needle body to lift or else you will get an off-center tip.