Universal Fermentation Airlock

1,438

31

4

Posted

Introduction: Universal Fermentation Airlock

This instructable shows how to add an airlock to almost any hermetically sealed container.

Step 1: Tools and Materials Needed

The tools and materials needed:

An airlock

1/4" plastic tube

PG 13.5 mm cable glands

A step bit or a 1/2" knock our punch

3/4" rubber washers

Total cost of consumables for one mount < 5 dollars.

Step 2: Make a Hole on the Lid

Use the step drill or the knockout punch to make a hole on the lid of your container.

The optimal hole size is one that the threaded end of the cable gland can barely fit through.

Step 3: Mount the Cable Gland

Pull the rubber gasket on the threaded end of the cable gland.

Insert the cable gland and tighten the nut with a wrench.

NOTE:

Silicone rubber is a better sealer then a normal rubber gasket but I didn't want to open a tube of silicone for this project. If you have silicone rubber at hand feel free to use it :)

Step 4: A Note on Airlocks

Some airlocks may have edges left from the manufacturing process. You may have to sand them of to ensure an hermetic seal.

Step 5: Have Fun With the Variations and Create a Jumbo Air Lock

Try out the flexibility of this method :)

I only used 1/4" tubes here but if you use a bigger cable gland you can easily mount a 1" tube on your container.

Here is the video that I got the idea from (now these are some serious fermenters !!!!)

Have fun with your fermenting :)

Share

Recommendations

  • Remote Control Contest 2017

    Remote Control Contest 2017
  • Design For Kids Challenge

    Design For Kids Challenge
  • Arduino Contest 2017

    Arduino Contest 2017

We have a be nice policy.
Please be positive and constructive.

Tips

Questions & Answers

4 Comments

This is great! Can this work on metal lids? I have a large pickle jar that I would love to turn into fermenters, but the lid is made of metal.

Yes it works. The pickle jar you see in this instructabel also has a metal lid. I strongli suggest using a step drill for that.

Thanks for the idea. I will make an instructabel also on making large pickle jars into fermenters (If you want to write it tell me so I wont steal your idea :) )

Oh, don't worry about waiting for me to make an instructable for this; I'm sure converting a large pickle jar is not a new idea. Good to know this works on metal lids.

Really great info! Thanks for sharing and welcome to the community!