You can achieve soft or thick lines with an airbrush
Airbrushing offers a method of artistic expression that is like none other. When an airbrush like Paasche AB airbrush is working properly, a fine paint mist is thrust from an airbrush gun by a generator or a can of propellant onto a work surface with a smooth and even stroke. If the airbrush is not working adequately, some small adjustments may need to be made to get it back to a good working order.
Instructions
1. Turn your stripple adjuster on your Paasche AB airbrush in a counterclockwise direction if you have a grainy painting effect. This screw is located on the elbow of the blast tube and controls the airflow. If the threads on this screw have become loose from excessive turning, the screw may not stay in place. If this is the case, take the screw completely out, roll a thin coat of beeswax into the threads with your thumb and finger, and screw it back into place.
2. Adjust the speed of your airflow, power wheel and needle by adjusting the speed regulator screw (if you feel that the speed is not providing adequate airflow or force to propel the paint for your project). Only adjust up to two full turns in either direction. Never force the screw in any direction if you feel resistance. This could cause you to break the screw. You cannot remove from the airbrush if this happens.
3. Check to see if your power wheel if your AB airbrush is getting stuck, binding, or becoming sluggish. If your airbrush has these symptoms, remove your needle, push down on the finger level and wiggle it back and forth. If the power wheel works after removing the needle, you need to replace the needle. If it does not work, loosen the bearings on the power wheel a little with a screwdriver in a counterclockwise direction while you press on the finger level to release air. This may free the power wheel to run smoothly. Adjust bearing by tightening it enough to stop the power wheel, then loosen it just enough to make the power wheel start running again (this will never be more than a quarter turn). If the power wheel runs then freezes up, this will indicate that the threads are worn down. If this is the case, work a small amount of beeswax into the threads of the screw with your finger and thumb. This should keep it in place. Recoat with beeswax when needed.
4. Rotate the finger level screw on your AB airbrush in either direction to adjust the width of your resting position spray. Avoid turning the screw too far in either direction as this may damage the needle or the working arm.
5. Check your air blast tube if you are not getting an adequate air supply. You may have a kink in the tube or it may not be attached tightly enough. Tighten or straighten the tube out if needed.