WASP Machines: The Last Word in Shell Pasting


Welcome to Connecticut Pyrotechnic Manufacturing 

Creators of the WASP aerial shell pasting machines.                                                                                                                              -Jim Widmann, President

The WASP machines were created to apply gummed paper tape to aerial fireworks shells, and automate this most labor-intensive aspect of shell manufacture. These are true CNC (computer numeric control) machines that run off a laptop or desktop PC. They will effortlessly paste your shells, and produce the exact same paste job, all day long, every time.   

The WASP Superstinger

2" through 12" Machine,


Click Here to see the flower from a WASP pasted 12" shell            

The WASP System:

The WASP machine applies a continous strip of gummed paper tape to spherical shells in an exact and precise manner. The WASP3 software uses a proprietary algorythm to provide a uniform covering of the shell for a perfectly round break.

In the picture below an ink marker was used to show the base pattern that the tape follows. The open "pole" at the middle of the shell is soon covered with the subsequent layer which is applied on a 90 degree axis. The next layer is applied on the 3rd axis to ensure full, even coverage. Note the accuracy of the pattern.

How the WASP system works:
Shells pasted on a WASP machine are constructed in a typical fashion except that a small magnet is inserted into the fuse hole instead of the time fuse. The shell is then placed on the WASP machine and pasted and burnished. The magnet is located by using another magnet (or any other ferrous object) and then, using a sharp knife, a "plug" of pasted paper is cut out around the magnet to reveal the fuse hole. The crossmatched time-fuse is then inserted and sealed to the shell with string and glue, or a short "tube well" that is filled with a plug of adhesive around the fuse. A few strips of gummed tape seals the shell.

* There are several other ways of fusing WASP shells. Manufacturers worldwide have developed many different methods.

Advantages of using a WASP machine:

  • Paste shells all day long without fatigue
  • 7 times faster than traditional hand techniques
  • Exactly the same paste job, every time
  • Completely automatic, stops by itself when program is done
  • Burnish mode provides a smooth, finished appearance
  • Easily adjusts to all your shell pasting needs
  • Requires only AC power and your computer

Click on the link below to see how shells used to be pasted,

Video of traditional shell pasting technique

W.A.S.P. = Widmann's Automatic Shell Paster

Please NOTE: Most of the videos on this website can be viewed using Quicktime video player. This can be downloaded FREE at the following web adress:


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