
Acetylene cylinders are not just a hollow tank with a valve and threaded coupling. In order to make unstable acetylene gas portable Prestolite invented the safety cylinder. These are filled with pumice rock (foamed rock or other fill) and liquid acetone. The acetylene dissolves into the acetone so there is no unstable gas in the cylinder. The rock foam prevents wave propagation necessary for an explosion. The cylinder also has melting and pressure fuses to release gas in a more or less controlled manner in a fire. The liquid fill is one reason you NEVER use cylinders lying on their sides. If you notice the the gas flame turn purplish you are drawing acetone and its time to stop using the cylinder.
anvilfire is happy to have licensed his metalworking cartoons and presented them here as the base for our daily and weekly comics. His knowledge of welding is also presented in our Safety and Welding Tip of the Day series.
Below are samples of nearly 100 metalworking comics and articles in our Frank Tabor collection. To see the rest, check back daily.


Spark Testing - Grinder Safety
A humorous safety poster from Frank Tabor and information about spark testing.The Green Smoke Caper
A humorous story about hot iron and the smelly results another real life story from Frank Tabor.Stack Burning and Studs
Flame cutting tips presented with humorous real life stories from Frank Tabor.The Horseshoe Caper
A cartoon from Frank Tabor and another from The Great Nippulinnithey're the color of blueprints."
We have digitally added grey scale fill or color to many of Frank's drawings in styles that are similar to the genre. In most cases it is only spot fill but in a few they are fully colored.