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The Old Welder Comics shop tips safety and shop stories by Frank Tabor

Spark Test Chart, 'Cast Iron, Steel, Fingers!' over grinder and Use your Goggles sign.

More than one safety pointer, and a laugh.

Spark testing is a simple method of roughly identifying steels. Sparks from a grinding wheel have various characetistics such as long or short sparks, branching or bursts. While not definitive the test can seperate basic iron and steel types.

Sample Spark Test Chart from Metals for Engineering Craftsmen

Basic Grinder Safety

Two anvils talking while smith works - one anvil with blood shot eyes. . .

Man, I had too much slack-tub juice last night!

I've been ringing all morning.