Cold Brew Coffee - Mason Jar Connector

by Joe_Murphy, published

Cold Brew Coffee - Mason Jar Connector by Joe_Murphy Mar 3, 2013
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Work in Progress. Still trying to figure out the filter part. Goal is to have a simple, clean, and efficient way to make delicious cold brew at home.


Print Connector
Ground Coffee Size of Sea Salt
Mix one part coffee one part water in one mason jar
attache connector and second mason jar, like an hour glass of caffeine, and let sit for 12 hours
flip mason jar and drip, drip, drip you got some tasty, less acidic cold brew.


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Will it work even without a hole to prevent complete sealing?

This is just great for my kitchen: After a really bad pantry moth infestation I decided that everything like flour, pasta, dog biscuits, rice, bulk spices, dried beans, etc. had to go into glass jars as soon as I got it home from the store. Canning jars all have the same lid, so that;s what I went with. It works great. To save space in my limited kitchen cabinets, when a jar was down to half empty, I'd transfer the contents to the next size down jar. I often wished that there was an adapter so I could just screw the smaller jar on top of the half-empty larger one and flip it over, rather than use a funnel and often spill some.

This is just perfect! Thanks!

haha great use! happy it worked for you!

I use a Toddy cold brew system, and the filter's in it work great. Maybe try a version that will fit these? If you need I can measure one after work so you can have the dimensions.


Also, thanks for the design. Can't wait to get my printer and make a couple of these for gifts :D

You could get one of these stainless steel coffee filters for $12. http://www.kaffeologie.com/http://www.kaffeologie.com/. Should fit nicely

I'm going to modify the file to include on of these stainless filters, I've got one sitting right here…

I got one as well..Should be getting my printer in a few months..will have to try this print.

Do you add a filter?

working on a filer holder or building it into the design. for now try using a paper filter.

Can you upload a design file for this? I would like to remix in order to add a Kaffeologie filter into your design…

design files uploaded. Working a version also. Let me know if you need the design files in a different format.