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Depends heavily on the product. Case in point: Chinese steel is now superior to US steel. High performance engine parts that used to be exclusively US steel are now Chinese... even the top of the line stuff used in NASCAR, F1, etc. Some is still machined to a final product here, but most of...

I wouldn't bet on that... plastic and nylon are UV weakened... and the material they're made of is BETTER than it was in the past, simply due to a maturing industry. Same goes for steel, aluminum, or any other metal I csan think of. There may be some things like makes intentionally downgrading...

Mentioned, and re-noted. plastic/regular < nylon < nylon w/SS tabs < SS w/poly/nylon coating :)

The hero may be a good deal for a research team looking at monitoring several points of a shallow reef... cheap and disposable if it gets "snagged"... especially if it comes in B&W (B&W naturally has a higher contrast scale than color allowing for better low-light defintion... video...

The 100' rating is disturbing as well. Good for say a 60' dive... but even a 80 to 100' dive could be a problem... static pressure is a slightly different situation than say going against the current (force applied to the leading edge of container), waving it around in the water, or even...

Yeah, I use stainless steel zip ties on my muscle car (holding electrical loom away from exhaust headers), but I'd never use them on scuba gear. They're high quality ties, but a metal band on a silicone mouthpiece just doesn't seem like a great idea (I picture cutting the neck of the mouthpiece...

Yeah, I suspect thats the case. I just felt it prudent to complete the story here. The prose about winglets being tested in a wind tunnel is also a little misleading IMO. Ask any engine builder to compare flow patterns of a cylinder head on a dry (traditional) flow bench vs one using a...

Ummm... you're not suggesting that you invented winglets are you? I mean really, they were used on LeMans and F1 racers since the 70's, and on small aircraft even before then. Preventing spill-over is one of the oldest tricks in aerodynamics... wing ends are/were the most classic solution...

Well, I will give you points for deftly avoiding the helmet, seatbelt, airbag examples. ;) But I have to point out the fundamental flaw to your example of military air crews. This is a major issue and THE reason we even have this discussion. For years, my jobn involved life safety emergency...

fair enough... assuming a CESA is possible... if not, that "rec dive" just got a whole lot worse. Totally... helmets and seat belts should be voluntary or even BANNED... they breed bad drivers who think they can survive accidents. Same goes for air bags, automatic transmissions, ABS... pretty...

Just to clarify, I didn't "shoot to the surface"... I was only a foot or two under it. :) This was more than any snorkle water... I was biting a mouthpiece completely in the water... no snorkling breath control is ever going to make air find its way to a loose mouthpiece under water. :) I...

Good idea. That would have definitely caught this one... especially since my buddy was renting the reg/octo set up this happened on.

I had a strange incident today involving a missing zip tie. I was practising a "simple" octo assisted ascent with a buddy. Murphy's Law was in full effect today. As soon as I pressurized my reg I heard a hiss coming from the yolk-valve interface... and found the o-ring was fine. Once I...

Ditto. I have a mini (2.5") BC knife, and a 5" BFK in tactical holster. Both have: - titanium blades - 1" markings/ruler etched on the blade - blunt tip for prying/screwing (and saves a BC/wet-suit purchase) - sharp straight edge - sharp serraded edge - fishing line notch - hard plastic...

Wow... denialists on both sides. How quaint. I dare anyone to leave that BFK in it's cozy little sheath -- since it's only a tool -- when a tiger shark shows up at the reef, you're 100' down watching the show (warming your wet suit) and he gives you a gentle bump and run feeler-pass. lol...

Sort of. My instructor took 3 of his dive masters down to 130 feet (5 atm, ~75psi?) and "sucked" an Al 80 tank empty... they managed to pull 4 breaths from it on the way up as the ambient pressure dropped off. A smaller Pony bottle or worse, a SpareAir bottle would give you even less...

That's the catch... its really a more permanent design for really hostile environments. Good for "black boxing" a PCD and wiring harness once all the soldering's done, but if you seal it to a container you can pretty much expect they're bound for life. No reason you couldn't place it all in a...

It's an epoxy specifically designed for encapsulating or "potting" electronic circuit boards for hostile environments. It's nearly bomb proof, water tight, electrically inert (insulator), yet thermally conductive (to prevent overheating). Most are acid/base/alcohol/water resistant as well...

There are more reasons than an emergency surface to ditch weights. I realize some prefer to dive their own style; I was just curious what he'd do if he tore his wings or BC bladder... especially if this included an injury making an arm or leg less mobile.

Forget the environment, think about yourself, your dogs, your family, etc... heavy metals are their most dangerous as particulates. Anyone who's done some grinding will learn this one quick. After taking a Neuroscience course I'm shocked how little lead it really takes to cause problems...