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AIRBRUSH HINTS _ TIPS

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					                           AIRBRUSH HINTS & TIPS


         TYPICAL SINGLE ACTION AIRBRUSH                                        TYPICAL DUAL ACTION AIRBRUSH
   An airbrush is a precision instrument which will give years of good service if properly cared for. The finish
  given by an airbrush compared to brushing has to be seen to be believed. Keeping the airbrush clean is of the
 utmost importance. Even a tiny amount of paint dried on the needle or in the tip will cause spraying problems.
    It's a really good idea to get to know how to disassemble & reassemble your airbrush. A little time spent
     learning how to do this before you start spraying will pay great dividends later. It's really not difficult &
 understanding the internal workings of your airbrush will help you to quickly identify and resolve any spraying
                                            problems quickly & easily.


                                      HOW A TYPICAL AIRBRUSH WORKS:
   As can be seen in the diagrams above, the trigger has one or two functions depending on the type of airbrush.
  In the single action type the trigger is depressed to open the valve beneath it, which releases the air supply. The
                width of spray is controlled by turning the spray regulator at the front of the airbrush.
  In a dual action airbrush, the trigger is also depressed to open the valve & release the air supply, but paint is not
 released until the trigger is drawn backwards. The further back the trigger is pulled, the wider the width of spray.

                                                                               CLEANING & MAINTENANCE:
                                                                                  1. REMOVING PARTS FOR CLEANING:
                 TROUBLE SHOOTING:                                          Most airbrush problems can be traced back to paint residue
                                                                          which has dried onto the needle or in the tip. To remove these
                             1. SPITTING:                                 from the airbrush, first secure the trigger by depressing it and
             Usually caused by paint residue on the needle                 fixing in position with some masking tape (Fig A). This will
      or in the tip. May also indicate that the paint is not thinned       keep the trigger & back lever in position while the needle is
                     sufficiently to operate properly.                      removed for cleaning. The needle is removed by unscrewing
                                                                          the casing at the rear of the airbrush, then undoing the needle
            2. BUBBLES IN THE COLOUR CUP:                               chuck. The needle can then be carefully pulled backwards out of
  May be caused by the spray regulator being turned out to far, or       the airbrush. If it does not come out, it may be stuck with paint
         by a blockage between the colour cup & head.                     residue. In this case it will be necessary to remove the head &
                                                                        tip from the front of the airbrush. To avoid this problem, always
                3. 'CENTIPEDES' OR RUNS:                                spray thinners through the airbrush when you have finished your
  Caused by spraying too close or insufficient movement when                                         spray session.
  spraying. Always use even strokes, parallel to the work piece.
                                                                                            Fig A         Fig B
    Spray several thin coats rather than one or two thick ones.
  Normally, only a short time is required between coats to allow
         sufficient drying before applying the next coat.

                         4. SPLATTERING:
         This is caused by closing the paint flow too quickly.                           2. CLEANING THE NEEDLE:
                Always close the paint flow smoothly.                     This is best done by using an ink eraser. Place the needle on a
                                                                          sheet of clean paper & very gently wipe the eraser along the
             5. ERRATIC / MISDIRECTED SPRAY:                             length of the needle (Fig B), working towards the tip. Ensure
     The needle may be bent or damaged. It may be possible to            that all abrasive & paint residue is wiped of the needle before
  straighten it by carefully holding it against a piece of paper on a                              reassembly.
  tabletop, then turning it gradually while running your fingernail
                    along the length of the needle.                                       3. CLEANING THE TIP:
                                                                          Tiny paint particles inside the tip can be removed by gentle
                                                                          cleaning with a reamer (see code: BA50-060 on page 253).

                                                                        4. CLEANING THE COLOUR CUP & THE PAINT CANALS:
                                                                           These should be cleaned using a small bristle paint brush &
                                                                                                   thinners.

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posted:1/24/2011
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