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Old 02-10-2011, 02:47 PM   #11
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Quote:
Originally Posted by Yambor44 View Post
If he is running his PID on manual, could the element get to that melting temp if left alone at 100%?
No. When I did my test with the nylon bag, I had my 5500W element running at 100%.
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Old 02-10-2011, 03:24 PM   #12
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Not all Nylon has the same melting point, and it would appear that as it ages it becomes less able to withstand the heat. That would be my take on the subject and I'd avoid contact if possible for long term safety of not having a melted nylon stout. It's also possible that TheAleMaster had a cheap not so Nylon bag.

 
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Old 02-10-2011, 05:55 PM   #13
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Nylon has a pretty high melting point. I HIGHLY doubt that ANY of it melts are around 212F. I can check with the molding guy out back, but I've never seen nylon melt under 400F. Granted, that is not nylon "thread", but I've molded plenty of other nylon and it's usually pretty hot compared to lots of other plastics.

 
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Old 02-10-2011, 06:00 PM   #14
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Just thinking out loud, could the poster who melted a hop bag be using a high density element? Generally most of us on electric are using low or ultra low density elements which spread the heat out over a larger surface area of the element. The low density elements are often folded back upon themselves to account for the longer length.
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Old 02-10-2011, 06:06 PM   #15
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Just check with the guy who consulted his book. The lowest melt point for any nylon that he could find was like 480F He thought that a heating element could do this if there were no water involved. But 480 degrees is a long way from 212...

He wondered if the bag were a blend of nylon and something else. Maybe a polyester blend??

 
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Old 02-10-2011, 07:55 PM   #16
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I'm the "never leave it alone, curious type" and when I was developing my system I tested the element temp while submerged. A meat thermometer, pressed against the HWD element running at 100% read between 210 and 215. Water boils at 199 at my altitude. It's safe to say the wort does a good job of rapidly carrying away the heat the element generates.

 
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Old 02-10-2011, 07:58 PM   #17
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Quote:
Originally Posted by jkarp View Post
Also speaking from experience - I must have uber-atomic-magical-extra-special hop bags. Mine sit right on top the element for 90 minutes. Never, ever, ever had one melt.
My experience also. Never happened with my bag hanging on a 5500W element for the last 2 years.
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Old 02-10-2011, 08:10 PM   #18
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Quote:
Originally Posted by passedpawn View Post
My experience also. Never happened with my bag hanging on a 5500W element for the last 2 years.
You guys using the nylon voile?

 
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Old 02-10-2011, 08:36 PM   #19
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Quote:
Originally Posted by gunner65 View Post
You guys using the nylon voile?
i use a paint strainer bag from Lowe's
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Old 02-10-2011, 10:11 PM   #20
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Quote:
Originally Posted by Walker View Post
i use a paint strainer bag from Lowe's
ditto. I get about 10 brews out of one of them, then they start to fall apart a little. Never had one completely fail, but little holes here and there.
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