open sections of bone by the tip the tip 24 may have a body portion 24 a extending back toward the free end of the barrel 17 for supporting the wax distribution tube 22 a trigger 26 is shown with a free end extending from the inside of the gun body 14 for a purpose to be hereinafter described the tip 24 as previously discussed is available in different sizes for example ranging from 2 through 5 millimeters in width the inside diameter of tube 22 has been found to be conveniently about 3 millimeters the extension of the tube 22 and the tip 24 from the free end of the barrel 17 has been established in a preferred embodiment as within the range of 7 5 to 10 centimeters the schematic showing of fig3 includes structure represented as on the body 14 of the gun like device 13 wherein the trigger 26 is pivotally attached to the gun body 14 at a pivot point 27 forcing the trigger 26 to pivot about pivot 27 in the direction dictated by a force f in fig3 causes a saw toothed rack 28 to rotate an inner saw toothed gear 29 in a clockwise direction the gear 29 is fixed to and rotates with a shaft 31 mounted in the gun body as seen in fig3 the rack 28 is therefore configured to rotate the inner gear 29 when the force f is applied and to resume a neutral position as shown in fig3 when the force f is removed the trigger 26 is urged back into the neutral position by means such as the spring 32 extending between a position on the trigger 26 and a position on.