On a recent Enco order I made the mistake of ordering both O1 and W1 drill rod in the same sizes. Normally they color code the stuff (red=water, yellow=oil, IIRC), but for some reason two rods were clean of markings. ???
After a lot of searching around, I found a suggestion to try spark testing them against a grinding wheel, and compare to a known sample.
Amazingly enough, that works. There's not a lot of difference in the spark, but there is enough if you have a reference sample that you can determine which is which.
After a lot of searching around, I found a suggestion to try spark testing them against a grinding wheel, and compare to a known sample.
Amazingly enough, that works. There's not a lot of difference in the spark, but there is enough if you have a reference sample that you can determine which is which.
