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Trigs
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Ok time for the big reveal! 🥁 This was an experiment, I'd never tried it before but I always wanted to play with some dry ice so I gave it a go! NOBODY guessed what it was for! 😲
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Trigs
@trigs
Removing old 'n busted sound deadening material to replace it with new, shiny sound deadening material (that actually works). This factory stuff was pretty good for its time, 1993! The "good stuff" is still all pretty much the same: butyl rubber. There are varying qualities and price points and you pretty much pick your poison. Problem is once it dries out and loses adhesion, it no longer absorbs vibrations. I had the carpet out anyway so I figured why not fix it up a bit. Plus... I always wanted to try out this dry ice trick!
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Trigs
@trigs
There are some classic YouTube videos of racers mixing dry ice with iso alcohol to flash freeze the material to separate it from the vehicle. Since not all of mine had finished separating yet, I thought I'd give it a whirl. https://embedr-mini-app.vercel.app/dca35e4
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Trigs
@trigs
Turns out it's pretty expensive and I wasn't sure how much to get. I ended up with ~5lbs to the tune of about $40. Worth it for the cost of the experiment, but would I do it again I'd make some different decisions.
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@trigs
Turns out you really need at least twice as much as I used because what's crucial is that you cover the entire surface area as quickly as possible. You need that flash freeze moment, I think. I covered it with a blanket and spread it around until everything was good and froze, but I ended up chipping a good deal off anyway. Would it have been just as easy to chip it off without freezing? Some of it, yes. But some of it was still pretty well adhered and I think I'd have wanted to heat it up to get it off if not freezing it.
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