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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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![]() "DeepDiver" wrote in message ... "SteveB" wrote in message news:2j4ge.24733$fI.11025@fed1read05... How did you get the name of Deep Diver? Steve (ex SurD02 and He02 diver) Hi SteveB, Unfortunately, I have not yet "dived" into the realm of Trimix, HeO2, Surface Decompression On Oxygen, or other exotic breathing gases or decompression techniques. Although I'd like to learn some of those skills one day. I got the nickname from an instructor when I was getting my Divemaster certification many years ago (I've since earned my Instructor rating). He wanted to teach me the effects of nitrogen narcosis, but could never observe any symptoms in me, even past the "recreational limit". Of course, JohnM's reasoning holds some merit too... :P - Michael I had high adventure from 1974 to 1980 in the Gulf of Mexico. Mixed gas, surface decompression in a chamber, underwater welding and cutting, setting explosives, building things, pipelining, and all sorts of things. I started diving in 1969. Since I quit in 1980, I haven't had a scuba tank on since. I would like to do some shallow water diving, maybe in Central America this summer. You do so much, that it gets to be like work. Cold water. Bad weather. Danger. It was a real adventure, and I am glad I followed my heart and did it. All diving is a kick, no matter the depth. Once you got your head underwater, it's all the same, anyway. And diving where you can see is a pure D joy. A lot of ours was in muddy water with the feel technique. As per nitrogen narcosis, it hits everyone different. Just like booze or drugs. The trick is to know when it has hit you, and to recognize when it's coming on. Some people can still stay focused though impaired. To learn our limits on CO2 buildup, we had to ride a stationary bicycle at the bottom of a pool of water until we passed out. That was fun. To learn our narcosis level, we just had to go into a chamber. Take care. Steve |
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