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Traditional Cylinder Shell Construction

Traditional Cylinder Shell Construction. Italian (or better said Italio -American ) style. Introduction. Introduction of materials , tools, and techniques for building cylinder shells.

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Traditional Cylinder Shell Construction

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  1. Traditional Cylinder Shell Construction Italian (or better said Italio-American) style

  2. Introduction • Introduction of materials, tools, and techniques for building cylinder shells. • The construction method derives from Italians that migrated to the USA and continued their efforts Stateside. Hence Italio-American. • Techniques blend even further with the change of materials that are available per generation. Technology such as the internet spawns self starters which also initiates change from tight knit family type operations.

  3. Introduction • As more people enter the hobby, their reasoning or interpretation changes based on what materials are available to the fireworker. • Sometimes this is a good thing and sometimes a bad thing. Must fully understand task at hand when modifing! • Best to avoid short cuts. Short cuts usually revert to inferior material and/or design. • Please ask questions as we progress!

  4. Quote from Mike Swisher • “The intent of the Fulcanelli article was to describe the typical catalogue shells that an Italian-American company would have made fifty years ago and the method that was used to make them. That method is a simplification of the methods used earlier and still used for shells larger or longer than those listed in the article”

  5. Sources • Pyrotechnica IX (April 1984) • Pyrotechnica XI (June 1987) • Books can be found online at some pyro suppliers • American Fireworks News (AFN) • Warren Klofkorn of Prometheus (prometheus.publications@cox.net) • Passfire.com • Fireworking.com • Amerature Pyrotechnics and Chemistry (APC) • RecPyro Google Group

  6. Sources • Club Members • Pyrotechnics Guild International (PGI) • A good mix of interaction with different people is needed to share all items pyrotechnic!

  7. Sourcing Tools and Material • It’s all about $$$$! • Use what you can get your hands on! • Maybe….maybe not. • Some tools and material can be made to save money. • Charcoal • Formers • Avoid inferior material as much as possible. • Corrugated cardboard • Weak spolette tubes

  8. Tools for Cylinder Shells • Formers • Calipers • Spiking Tools • Spolette Tooling • Canulles • Turacciolo (plug for break) • Spolette Rammer • Awl or punch • Different Paper Cutters • Brushes • Blender • Screens • Dead Blow Hammer • Shell Roller • Alpax Circle Cutter • Shell Press • Forstner Bits

  9. ShellConstruction Components • Paper • Paste • String • Shell Case • End Discs • Liners • Paste Wraps • Black Match • Burst • Garnitures • Stars • Comets • Inserts • Pipe (for passfire) • Spolettes • Time Fuse • Buckets • Passfires • Lift

  10. Paper Grain Direction Grain Long Grain Short

  11. Paper Grain Direction Grain Long Grain Short

  12. The following tables are slightly modified from the Pyrotechnica books mostly to accommodate the inclusion of 7” cylinder shell construction As I interpret the dimensions needed!

  13. Case Former Dimensions

  14. Kraft Paper Weights and Thickness 70 pound paper is normally used. Thinner paper could be used and would require additional turns.

  15. Kraft Paper Sizes for Cases

  16. Paste Wrapsfor Single Break Canister Shells

  17. CanulleDiameter

  18. Standard Spiking Patterns

  19. Spolette Information for Single Break Shells

  20. Time Fuse Delay Times The length of fuse will depend on the burn rate for that particular fuse. Usually 3 seconds per inch is close but does need to be verified! Time fuse not recommended for cylinder shells!

  21. Lift Charge Amounts for Single Break Shells

  22. Paste • Wheat Paste • Mix as directed on package. Usually heavier paper will need more water and lighter paper will need less. • Recycled paper will like less water. • Maltese Paste • 900 grams water • 600 grams Elmer’s white glue • 120 grams wheat paste (dry) • 10 grams Potassium or Sodium Benzoate (preservative)

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