[BrewBama]

I saw a company market this and decided I can do this and save about $45

Theirs for ~$50:



Mine for ~$5 (granted I had the tubing, jars, air lock, and o-rings on hand)



I think I'll install an 'S' air lock but here ya go after 5 min of drilling and assembly:




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[Stevie]

Cool. Consider switching to grommets. It would allow you to put the soft tubing directly into the lids and would minimize parts.

[tommymorris]

I may not understand the contraption, but, why is the extra airlock even needed?  The tubing sits in water in the jar. That's an airlock right there.

[Wilbur]

I may not understand the contraption, but, why is the extra airlock even needed?  The tubing sits in water in the jar. That's an airlock right there.

It's kind of a triple airlock/blowoff deal so when you cold crash you don't suck oxygen in your fermenter. Looks great, I think even if you bought done silicone tubing and the jars you'd be about $8 in.

[BrewBama]

Cool. Consider switching to grommets. It would allow you to put the soft tubing directly into the lids and would minimize parts.

True. But then I'd have to buy a bigger drill bit than I have on hand.

I may not understand the contraption, but, why is the extra airlock even needed?  The tubing sits in water in the jar. That's an airlock right there.

It's kind of a triple airlock/blowoff deal so when you cold crash you don't suck oxygen in your fermenter. Looks great, I think even if you bought done silicone tubing and the jars you'd be about $8 in.

+1. It saves the CO2 from fermentation and when you cold crash it sucks CO2 back instead of O2 and liquid.

I'm gonna use the $45 to order my next batch's ingredients.

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[brewinhard]

Nice work and pretty cool too!

[TeeDubb]

I like the idea, but it seems complicated.  What I started doing on recent batches is just snip the corner off a large gallon size ziplock bag and then put the entire airlock inside the bag.  I zip-tie the snipped corner around the airlock tube just above the fermenter grommet. While I could let the bag fill up with co2 from fermentation, I just purge and fill it from my c02 tank and seal it up prior to cold crashing. I have not seen more then about half the bag volume of C02 gas get pulled into the fermenter going from 70 to 35F.

[JT]

I like the idea, but it seems complicated.  What I started doing on recent batches is just snip the corner off a large gallon size ziplock bag and then put the entire airlock inside the bag.  I zip-tie the snipped corner around the airlock tube just above the fermenter grommet. While I could let the bag fill up with co2 from fermentation, I just purge and fill it from my c02 tank and seal it up prior to cold crashing. I have not seen more then about half the bag volume of C02 gas get pulled into the fermenter going from 70 to 35F.

Sorcery! I like it!

  "If more of us valued food and cheer and song above hoarded gold, it would be a merrier world."

[jeremy0209]

I've never been able to successfully (cleanly) drill a hole in a Mason jar lid. What kind of drill bit did you use?

[BrewBama]

I like the idea, but it seems complicated.  What I started doing on recent batches is just snip the corner off a large gallon size ziplock bag and then put the entire airlock inside the bag.  I zip-tie the snipped corner around the airlock tube just above the fermenter grommet. While I could let the bag fill up with co2 from fermentation, I just purge and fill it from my c02 tank and seal it up prior to cold crashing. I have not seen more then about half the bag volume of C02 gas get pulled into the fermenter going from 70 to 35F.

Sorcery indeed!  LOL

I've never been able to successfully (cleanly) drill a hole in a Mason jar lid. What kind of drill bit did you use?

I used Dewalt Titanium bits. I did get some tearing but a pair of lineman's pliers cleaned up the holes. The o-rings on each side of the lid -- compressed slightly with nuts -- gave me a good seal.


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