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I agree with Steve. The import stuff is clean and well cared for whips, accurate gauages, slow rate of fill (especially O2) (avoid heating the gas), open and close values slowly, radius of turns on pipe or hose work, test the O2 content to ensure you are on target at each step. The rest is gas theory and compressability. We remix on a 60 ft Crew boat in three plus foot seas on tech dives. One of the guys has a portable Haskel. David -----Original Message----- From: Steve Lindblom [mailto:s_lindblom@co*.co*] Sent: Tuesday, April 25, 2000 11:42 AM To: techdiver@aquanaut.com Subject: Re: Q about 02 fill whip experience Mixing is just so damn easy that most people I know who've been doing it for a few years look back at all the apprehensions and misconceptions they had before they started, and laugh when they think back at how terrified it was and how they'd built it up in their minds. I know I do - god, when I think how my hands were trembling the first time I opened that O2 valve even though I'd been welding with the stuff for years. The problem is, with all the bullshit floating around, most of it promogulated by the agencies so they can sell COURSES, you get thinking it is much more complicated, dangerous and precision than it really is. And then, the real joke is, that since they are taking an authoritarian "we are the source of all true knowledge" approach, they don't really cover the important, conceptual stuff, like filling rates and system design, so you aren't equipped to actually go out and do it in real life, unless you buy the sytem you learned on. You'd learn more useful knowledge finding someone in your are who is homemixing who could show you just how damn simple it is. There seems to be a pattern that turns up here, of people who have all the info, but just can't believe it's true, and want some hand holding. So they take a course, or two, or three, looking for the "permission" that never comes - the course is given on some $4000 panel, and the instructor tells them what a hotshot he is to be able to mix, and how it's just so intimidating that the student really needs more courses, and more books, and a panel just like his to be able to mix, so the net effect is that the student loses confidence with each course rather than gaining it. IT JUST NOT THAT BIG A DEAL! Heck, I'd dive with mix done by just about anyone on this list as long as I could take a peak at their mix log - it cracks me up how I've got one or two (distant) buddies don't want to use my mix because I'm a "homebrewer" and insist on going to a shop for it - the idiot at the shop mixes each side of a set of double separately since it's "more accurate" and also he's afraid the crossover will explode if O2 goes through it! That said, the NAUI course is pretty good because it is very down to earth and low on the rocket science/clean room bullshit. But it really boils down to the instructor - if you can find someone like Joel Silverstein who actually started mixing before he took the mix instructor course you'll have a great time and maybe learn something useful. but it was >Can someone give me an idea as to how the NAUI blending course stacks up >against the IANTD one? -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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