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-   -   Mashtun is Dying a Quick Death (Do yours warp too?) (http://www.homebrewtalk.com/f11/mashtun-dying-quick-death-do-yours-warp-too-186879/)

Jewrican 07-18-2010 01:58 PM

Mashtun is Dying a Quick Death (Do yours warp too?)
Well this morning is a brew day and I am seeing that my mash tun is not going to cut it for another batch.

I am using an old Mountain Dew cooler (it was free :) ) and the heat from adding the strike water from my kettle (only have a mash tun and a kettle which i drain into the tun) is causing the mash tun to warp on the inside :(

I think this will be its 4th and final batch. How long to the Home Depot coolers last most of you? Do you eventually have the same problems?

I may go to another keg to mash in and just direct fire it with another burner.

shelly_belly 07-18-2010 02:20 PM

I have a 5gal rubbermaid round that was given to me with the inside all warped up. I've put 15 additional batches on it so far. I figure it's good until it leaks or quits holding temperature. I also picked up a 10gal rubbermaid for an HLT (I only have 1 pot) and it warped up the first time I put 180F H20 in it. Still useable though.

Edit: I probably could have avoided warping the 10gal as it was winter and near freezing. I should have warmed the cooler up first with maybe some 100F water or so.

malkore 07-18-2010 02:39 PM

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).

Captain_Bigelow 07-18-2010 03:44 PM

My 10gallon Rubbermaid warped inside after about 3 batches. 10-15 batches on it still works fine. I need to upgrade from the 5/8 brass to the 1/2 stainless steel fittings at some point though.

Jewrican 07-18-2010 08:51 PM

i think you guys have nailed the issue here.

I am putting 180 - 185 degree water in there and waiting till it gets to my strike temp to begin my dough in.

I needed to strike at 169.5 today. I should have added my water to the tun at 175 or so and been able to dough in pretty quickly.

I was really trying to nail my process this time and i hit my gravity at 70% efficiency to the T. I am pretty happy and will still concider replacing my tun as i would be so pissed if it began to leak on me.

In addition i am thinking more and more about BPA and would prefer to be all stainless.

Carter1932 07-18-2010 09:02 PM

My rectangular Igloo cooler lauder tun is almost 15 years old and still going strong. Not had issues with warping, except a bit on the outside when I placed it too close to my burner.

moosetav 07-19-2010 05:00 PM


Originally Posted by Carter1932 (Post 2167157)
Not had issues with warping, except a bit on the outside when I placed it too close to my burner.

that'll do it....:mug:

Displaced MassHole 07-19-2010 05:03 PM

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.

Ohio-Ed 07-19-2010 05:22 PM

My 10 gallon HD cooler warped after about 3 - 5 brews, then the "buckle" cracked top to bottom after about 10 uses. I now use an insulated converted keg... hasn't warped yet.

samc 07-19-2010 05:26 PM

I have a rectangular Rubbermaid that I don't use anymore, why?

At some point early on I realized that they call it a "Cooler" for a reason. Much happier with the performance of a keggle, until clean up time.

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