S-7 spark test
Spark test for a rod that was bought from Ebay advertised as S-7. The arrow tips of the sparks indeed do look like molybdenum arrows. This photo was taken with a Fuji Finepix camera using the "nite shot" mode.
Spark test for a rod that was bought from Ebay advertised as S-7. The arrow tips of the sparks indeed do look like molybdenum arrows. This photo was taken with a Fuji Finepix camera using the "nite shot" mode.
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