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Tooly
Stranger
Registered: 03/30/07
Posts: 86
Last seen: 17 years, 9 months
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spawn bag busted wtf!
#6775955 - 04/11/07 04:44 PM (17 years, 9 months ago) |
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what did I do wrong?
I didn't let the bag touch the sides of the PC or nothing
I'm lost
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shagg
nottanub



Registered: 02/07/07
Posts: 448
Loc: South
Last seen: 12 years, 17 days
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Re: spawn bag busted wtf! [Re: Tooly]
#6776003 - 04/11/07 04:59 PM (17 years, 9 months ago) |
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i dunno but that sucks ass? just rebag it
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Tooly
Stranger
Registered: 03/30/07
Posts: 86
Last seen: 17 years, 9 months
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Re: spawn bag busted wtf! [Re: shagg]
#6776019 - 04/11/07 05:02 PM (17 years, 9 months ago) |
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I'm not going to pressure cook again until I find out why it busted
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shagg
nottanub



Registered: 02/07/07
Posts: 448
Loc: South
Last seen: 12 years, 17 days
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Re: spawn bag busted wtf! [Re: Tooly]
#6776022 - 04/11/07 05:03 PM (17 years, 9 months ago) |
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true true
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belafonte
Stranger
Registered: 04/05/07
Posts: 25
Last seen: 10 years, 6 months
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Re: spawn bag busted wtf! [Re: shagg]
#6776061 - 04/11/07 05:17 PM (17 years, 9 months ago) |
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was it just sitting down there in the water at the bottom of that thing? thats kind of what it looks like is all.
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Wronguy

Registered: 03/05/05
Posts: 4,450
Last seen: 13 years, 6 months
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Re: spawn bag busted wtf! [Re: belafonte]
#6776106 - 04/11/07 05:27 PM (17 years, 9 months ago) |
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Is it really a spawn bag or a make shift bag? Your photos look like an oven bag type setup. Chances are that the bag was sealed, meaning it had no avenue for steam to escape, and finally burst under the pressure.
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belafonte
Stranger
Registered: 04/05/07
Posts: 25
Last seen: 10 years, 6 months
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Re: spawn bag busted wtf! [Re: Wronguy]
#6776120 - 04/11/07 05:29 PM (17 years, 9 months ago) |
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that was going to be my next question to him. In addition to that it looks like regardless how much care was taken to keep the bag away from the sides that it was touching the bottom of that thing, at least thats what I'm seeing from the pictures. whether that helped it burst I don't know.
Edited by belafonte (04/11/07 05:30 PM)
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RogerRabbit
Bans for Pleasure


Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 1 year, 10 months
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Re: spawn bag busted wtf! [Re: Wronguy]
#6776155 - 04/11/07 05:34 PM (17 years, 9 months ago) |
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Yea, it looks homemade. They always burst after the cycle as the PC cools down. If it cools too fast, the PC loses pressure before the inside of the bag cools down enough to lose pressure, thus the pressure differential between inside and outside the bag inflates it to the bursting point. I've worked out a system to prevent that from happening, and it involves putting a tyvek sleeve in the bag, extending from the substrate up and to the outside of the bag. You fold the end of the bag accordian style, with the tyvek between the folds. This lets the bag expand to let the steam out, but as it contracts, the plastic seals to itself except where the tyvek is, and it serves as a filter. I'm now batting 100% success with this method after several hundred bags, without a single contaminant or burst bag. You wait to seal the bag until after inoculation with this method.
It also doesn't matter if the bag touches the sides or not, provided you're using autoclavable filter patch bags. I load my PC totally full right to the lid. RR
-------------------- Download Let's Grow Mushrooms
semper in excretia sumus solim profundum variat
"I've never had a failed experiment. I've only discovered 10,000 methods which do not work."
Thomas Edison
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