Star testing gun

From PyroGuide

A star testing gun is a device used to test the performance of stars when they are burning in the air. It can be anything from a mortar, paper tube or a custom made metal device as in the picture. Typically most star test guns are made from steel for the simple reason of reusability.

The device in the picture is basically a steel plate with several different sized steel tubes welded vertically to the base. Each tube has a visco fuse hole drill at the base and enables you to test various sized stars. A small amount of black powder is added to the base of the tube and then a close fitting star on top. Visco fuse is then inserted into the hole. When lit the star is fired into the air demonstrating it’s performance. Star test guns can be purchased online from Skylighter. For more information on testing stars click here.