Gregory's Serverfound more pics. the O rings weren't properly designed, the one on the left sits too deep because the groove wasn't machined correctly. There's also a plunge hole (presumably to get the undercutting tool in) that is a serious weak point.
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14 comments
  @tubetime I’ve seen disposable drug smuggling boats wash up on the coast that are more resilient than this.  @tubetime am thisclose to a panic attack (no, am not joking) reading this. this was a death sentence from the very beginning. when Walter Benjamin said that capitalism is a death cult, this is exactly what he meant.  @tubetime summary of the report: this is what happens when you let billionaires/techbros design and/or build stuff that should keep lives secure and safe.  @tubetime Sheesh, this feels more like a movie prop than something intended to go to extreme ocean depths. We've all done hacky things but not in such unforgivable environments with risk of life for....tourism.   @tubetime this "conical" groove means the o-ring will expand in it under pressure and prevent it from being watertight enough, or is it just me? Not only this requires a tool entry hole that adds a point of failure, but a simpler straight groove might have been much better for watertightness, right? Who designed that? Looks like they didnt even do basic homework on this. @f4grx no this is the standard way to capture an O-ring. a square groove would allow it to fall out. the trick is to use the right parameters so it compresses the correct amount. and i'm pretty sure there's a clever trick to eke the tool into place without leaving a plunge hole.  |
the end sections of the hull, after being machined down to length, left these pieces behind, which show evidence of delamination. on the right, they put a bright light behind it and you can see it all the way through. very bad!