I'm reminded of a stunt my old foreman used to pull. He was not just an electrician, but an HVAC and plumbing guy... and part of HVAC is insulation.
He would have someone hold their hand out palm up. He would put a pile of this greyish squishy fuzzy stuff on said palm, and then a penny. Admonishing them to hold their hand well away from their face, he would then fire up a propane torch, and heat the penny to a glowing red... while they were still holding it. This is the stuff they blow in to spaces in a few minutes to a couple of hours. (Unfortunately, it does tend to settle... )
What's really cool is that *that* stuff is (at least somewhat) *structural*... *and* it's made exactly how I thought they would, just like cotton candy.
Having trouble imagining applications for it, though. Maybe a heat shield on a motorbike's exhaust?
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dancing_serpent
(no subject)
Date: 2017-06-03 06:31 am (UTC)He would have someone hold their hand out palm up. He would put a pile of this greyish squishy fuzzy stuff on said palm, and then a penny. Admonishing them to hold their hand well away from their face, he would then fire up a propane torch, and heat the penny to a glowing red... while they were still holding it. This is the stuff they blow in to spaces in a few minutes to a couple of hours. (Unfortunately, it does tend to settle... )
What's really cool is that *that* stuff is (at least somewhat) *structural*... *and* it's made exactly how I thought they would, just like cotton candy.
Having trouble imagining applications for it, though. Maybe a heat shield on a motorbike's exhaust?