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Old 07-19-2010, 06:12 PM   #11
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Originally Posted by Displaced MassHole View Post
My 10 gal round rubbermaid cooler warped the first time I used it. There is a vertical "rib" that popped out on the inside, but after 100 or so batches I never had a problem.
Same thing here; vertical warping that has never affected the cooler since. I've been using mine for a good 4-5 years like this.

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Old 07-19-2010, 07:16 PM   #12
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Originally Posted by malkore View Post
neither of my cooler MLT's have warped (both rubbermaid, 5gal and 10gal 'Home Depot orange' one)

I never hit it with boiling water though. I think a few people have found if you never let em hit 180F they don't get so soft to warp. I know I put my 165F strike water in the tun first, then add my grain to avoid doughballs, and that hasn't warped it).
Same here. I warped my first HD cooler by putting boiling water into it for the 'pre-heat'. I've since got into the habit of preheating with 160ish water and I've probably done 25+ brews in the new cooler with no warping at all.

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Old 07-19-2010, 07:33 PM   #13
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I don't think these coolers are made to exacting tolerances. Some have had very good luck with them, I was not so lucky.
I never put boiling water in my HD cooler, I did however pre-heat using 170f.

I had a 5 gallon cooler that never gave me any problems.
Some seem to be indestructible, but not all.
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Old 07-21-2010, 10:04 PM   #14
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both of my 10 gallon HD coolers warped within the first couple uses....been at least 100 batches since and they hold temps near perfect. I wouldn't worry about them warping, unless they stop holding temps.
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