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Offlinebarrier101
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SFD lids breaking during PC
    #18926663 - 10/03/13 04:40 PM (10 years, 4 months ago)

Hey shroomery long-time-no-see! Here's my issue. I've been making SFD lids per this tek. They work great, prevent contams, save me money and hassle; I just have one issue, after a few times through the PC they will eventually just pop off and I have to throw away a whole jar of grain that i just soaked, cooked, and PCed. What's the deal? Am I making them wrong? Do I have bad silicone? I attached a picture of my silicone and the broken lid. Thanks! (FYI I am at high elevation if that makes a difference)


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OfflinePussyFart
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Re: SFD lids breaking during PC [Re: barrier101]
    #18926685 - 10/03/13 04:45 PM (10 years, 4 months ago)

I would try different silicone adhesive.

I use the blue RTV stuff and you would literally need the jaws of life to get my SFDs off my lids, even after 30-40 Pressure cookings.

       


And yes, I use my lids rubber side up.


Edited by PussyFart (10/03/13 04:47 PM)


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InvisibleSpitballJedi
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Re: SFD lids breaking during PC [Re: barrier101]
    #18926713 - 10/03/13 04:54 PM (10 years, 4 months ago)

I've tried about 5 different commonly used silicone and RTV. The red RTV seems to hold the best for me. I use it for my agar bottles, but the PC time is only 30 mins and it's going to be used quickly.

SFD's just don't seem to stick very well for me. I can grab the edge of the SFD and peel it right off the RTV.

I kick it old school when it comes to my grain jars. I use the whole filter.


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Edited by SpitballJedi (10/03/13 04:56 PM)


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OfflineRogerRabbitM
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Re: SFD lids breaking during PC [Re: SpitballJedi]
    #18926890 - 10/03/13 05:41 PM (10 years, 4 months ago)

Use the synthetic filter disks whole as you're supposed to, without cutting.  I have some that have been used thousands of times and are stained black, but still work perfectly.

You should have four small holes in your lids and then use the whole surface of the sfd outside the lid for best gas exchange.
RR


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InvisibleSpitballJedi
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Re: SFD lids breaking during PC [Re: RogerRabbit]
    #18926930 - 10/03/13 05:47 PM (10 years, 4 months ago)

Quote:

SpitballJedi said:
I kick it old school when it comes to my grain jars. I use the whole filter.




I guess I wasn't clear or maybe you meant to reply to OP, but I don't use adhesive on my grain jars. I use SFD's whole and correct.


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OfflineOregonMushys
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Re: SFD lids breaking during PC [Re: SpitballJedi]
    #18927007 - 10/03/13 06:01 PM (10 years, 4 months ago)

Does placing the lids rubber side up increase any chances of contams? Since there is no seal placing it that way, wouldnt it let air in?


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InvisibleSpitballJedi
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Re: SFD lids breaking during PC [Re: OregonMushys]
    #18927099 - 10/03/13 06:20 PM (10 years, 4 months ago)

Air follows the path of least resistance. If your rings are snug, then that path is your filtered GE hole.


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Offlinebarrier101
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Re: SFD lids breaking during PC [Re: SpitballJedi]
    #18927427 - 10/03/13 07:06 PM (10 years, 4 months ago)

if the filter disc is on the outside where do you inoculate? through the filter? also how do you know where your hole is if they are stained black >.>


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InvisiblePestile

Registered: 05/02/13
Posts: 875
Loc: Northern Europe
Re: SFD lids breaking during PC [Re: barrier101]
    #18927462 - 10/03/13 07:11 PM (10 years, 4 months ago)

Either use G2G or make a self healing injection port in the lid.


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InvisibleSpitballJedi
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Re: SFD lids breaking during PC [Re: barrier101]
    #18927471 - 10/03/13 07:12 PM (10 years, 4 months ago)

I don't use syringes, I use agar. I open the jar in a SAB. You can also do this with syringes.


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The Basics
A little civility goes a long way

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OfflinePussyFart
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Re: SFD lids breaking during PC [Re: barrier101]
    #18927524 - 10/03/13 07:21 PM (10 years, 4 months ago)

Quote:

barrier101 said:
if the filter disc is on the outside where do you inoculate? through the filter?



I only use agar and G2G transfers....no need for an inoculation hole....I just open the lid in a SAB.


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