Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > DIY Projects > $4 Thermowell

LinkBack Thread Tools
Old 03-27-2011, 04:41 AM   #1
Feedback Score: 0 reviews
Join Date: Jul 2007
Location: Oceanside, CA
Posts: 821
Liked 38 Times on 31 Posts
Likes Given: 29

Default $4 Thermowell

This is thermowell is for my HLT. As cool as a nice SS one was it was overkill.

So I took the copper fitting (a compression fitting/ 1/2 MPT) drilled out the constricting part of it in the middle. This allowed the bendable copper tubing to come in from the opposite side. I took a piece of soft copper and bent it over a few times and banged it with a hammer to meld the one end closed. The other end was cut and cleaned up with a file to make sure it was smooth.

Initially made one with 1/4 " copper tubing and it worked well. Unfortunately the thermosensor I wanted to use did not work with the temp switch. The sensor that came with the Chinese temp switch was much thicker. I made another one from 3/8 soft copper.

It works great. If I used soft copper on hand total cost would be under $4. I was able to buy a foot of copper for under $3 for each size.

Photopilot is offline
Reply With Quote Quick reply to this message
Old 03-27-2011, 07:04 PM   #2
Feedback Score: 0 reviews
JuanMoore's Avatar
Join Date: Oct 2009
Location: The Old Pueblo
Posts: 16,208
Liked 3212 Times on 3115 Posts
Likes Given: 18


Nice. That's almost exactly how I made the thermowells for my MLT and HLT. The only difference is the way I sealed the ends. I dabbed a little flux inside the copper, crimped it shut with some pliers, and then soldered it to make sure it would be watertight.

JuanMoore is offline
Reply With Quote Quick reply to this message

Quick Reply
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Max. Thermowell diameter Bru DIY Projects 2 08-26-2010 12:01 PM
Fermenter Thermowell Hogcrewer DIY Projects 5 08-01-2010 01:45 PM
Creating a Thermowell splobucket DIY Projects 1 03-20-2010 12:38 PM
Thermowell ggltd DIY Projects 1 11-09-2009 07:51 PM
Aluminum thermowell? Highlandsbrew DIY Projects 1 08-15-2009 02:32 PM