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Old 09-22-2009, 06:39 PM   #1
tkone
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Default People who've made heat sticks

did your chrome drain pipe extension nut look like this:



note how dull the shine is on the nut. this is still chrome right? like totally safe to use in something i'm gonna submerge in hot liquid that i will eventually consume?

thanks!

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Old 09-22-2009, 07:11 PM   #2
Cpt_Kirks
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Yes, it looked like that.

I have had no issues with mine, and it has been used in about 25 batches so far.

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Old 09-22-2009, 07:15 PM   #3
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hot. heatstick brewing this weekend then!

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Old 09-22-2009, 07:27 PM   #4
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Don't believe that nut is chromed... aluminium maybe? Mine is so covered with JB Weld it likely doesn't matter anyway I love my heatstick!

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Old 09-23-2009, 05:49 PM   #5
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Mine looked like chrome at first, but through the process of galvanic corrosion, I determined that it must be something else. The pipe remained shiny and the nut in question was encrusted with what looked like aluminum (from my paddle).

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Old 09-23-2009, 06:12 PM   #6
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Does anybody get a "coating" on the element of their heatstick when they use it?

Mine gets a thin, white-ish coating. It is not sweet, so I don't guess it is carmelized sugar.

The coating is pretty easy to wash off, I go over it with a soft scrub pad.

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Old 09-23-2009, 06:23 PM   #7
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I suppose the white coating on the element could be from that nut...seriously, but just a guess. I know that water heaters have zinc pieces in them that are meant to be sacrificial bits and keep other, more important stuff from corroding. It could also be minerals in the water too. Either way, mine is the same fwiw.

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Old 09-23-2009, 07:05 PM   #8
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I get the coating, I always assumed it was dried wort residue.

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Old 09-24-2009, 05:26 AM   #9
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Most likely Calcium and other mineral deposits

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Old 09-24-2009, 09:29 AM   #10
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The nut is pot metal. Its a zinc alloy that can contain many different metals including lead. It has a very low melting point. http://en.wikipedia.org/wiki/Pot_metal

I've tried to solder onto them and ended up melting them with a propane torch.

They make those nuts in brass too. You will find them in more expensive products like Kohler sink drains etc.

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