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Restoring a Mega-Dart MX-5 Blowgun Dart Pistol

Many times items are acquired that need restoration in order to work properly.  Such is the case with a Mega-Dart MX-5 blowgun that I purchased.  A few minor parts such as the trigger guard, a few screws, and the original camo wrapping were missing but more importantly the MX-5 wasn't building any air pressure.  The original piston seal though cosmetically perfect no longer sealed the compression tube with enough force to propel a dart out of the barrel.   So a new piston was made incorporating common Buna o-rings as the sealing media.  The series of photos below document the restoration process. 

The primary tools used to make the piston were a Sherline lathe and a Taig milling machine.  The interior of the compression tube was smoothed with a swab of Scotchbrite pad attached to a wooden dowel rotated by an electric drill inside the tube.  The residual adhesive left behind from the original camo tape was removed with 91% Isopropyl Alcohol with no ill effects to the plastic components.

*Click on any image for a larger view.


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