Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns, & Hot Liquor Tanks > DIY themowell from 1/4" tube
Reply
 
Thread Tools
Old 03-08-2012, 03:22 PM   #11
clearwaterbrewer
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Clearwater, FL
Posts: 265
Liked 9 Times on 9 Posts
Likes Given: 32

Default

Quote:
Originally Posted by jpalarchio View Post
I think the thermowells have a large enough ID to hold the probes or a probe from something like a Johnson controller.

The probe ends are large enough for individual sensors like a one-wire sensor or anything else in that package size.

Darrin's stuff is pretty well made. I've given up trying to make anything he sells already as I know mine wouldn't be as good.

Not sure how you're using these but check out how he does the compression fittings by drilling through them and them using o-rings as a seal. Works out real well when in a mash tun so you can easily back them out of the way while stirring in your grains.
I buy the 10-packs of 2P237 fittings from grainger and drill them for 1/4" in the lathe to get a straight hole:


then I use a 1/8" long piece of 1/4"ID plastic tubing as the ferrule, but my next order, getting some 2CGH8 PTFE(teflon) ferrules :


I use these EPCOS B57500M0103A005 thermistors for my BCS.. both Newark and Digikey have them for <$3.00



and a few of these GE Sensing MA100 thermistors that are about $5 from Newark, but only 2mm in diameter, that fit in meat probes for use in my smoker, as I like to see the brisket temp vs smoker temp graph from the internet ;-)


so without tubes, I am at $40 for 10 sensors... if I get the tubes at $4, I am at $8 per sensor, and I know exactly the parameters of the thermistor and can use the same parameter thermistor in several ways, not being tied to what the person who made the sensor used...

here is tubing enough to make 10 probes, average length 7.2" total would be only ~$5/probe :-)
Tubing, Welded, 1/4 In, 6 ft, 304 SS


clearwaterbrewer is offline
 
Reply With Quote
Old 03-08-2012, 03:26 PM   #12
clearwaterbrewer
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Clearwater, FL
Posts: 265
Liked 9 Times on 9 Posts
Likes Given: 32

Default

when I feel rich, I will go to stainless fittings...



clearwaterbrewer is offline
 
Reply With Quote
Old 03-08-2012, 03:33 PM   #13
yjfun
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2010
Location: Arlington, Washington
Posts: 225
Liked 2 Times on 2 Posts

Default

You can use a ball or knob turner on your lathe to get the end perfectly round. They aren't that hard to build.
yjfun is offline
 
Reply With Quote
Old 03-08-2012, 03:45 PM   #14
clearwaterbrewer
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Clearwater, FL
Posts: 265
Liked 9 Times on 9 Posts
Likes Given: 32

Default

those are for cutting, right? (that is all that I see) here is what I am talking about... just on a larger scale.. all I need is the skill, and the hat... that is one bad hat!

clearwaterbrewer is offline
 
Reply With Quote
Old 03-08-2012, 03:46 PM   #15
clearwaterbrewer
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Clearwater, FL
Posts: 265
Liked 9 Times on 9 Posts
Likes Given: 32

Default

LOL... this thread is now the 4th hit for Google search of: spin tube shut in a lathe
clearwaterbrewer is offline
 
Reply With Quote
Old 03-08-2012, 05:02 PM   #16
johnnyc
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Location: North Atlanta, GA
Posts: 688
Liked 9 Times on 7 Posts

Default

I used a piece of soft copper and plugged the end with a short piece of 00 ground wire. Ground it smooth and haven't had any problems sense.
__________________
Kegged: Hoppy Amber, ESB, Weizenbock, Breakfast Stout, IPA

Fermenting: Yooper's Oktoberfest
johnnyc is offline
 
Reply With Quote
Old 03-08-2012, 05:37 PM   #17
clearwaterbrewer
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Clearwater, FL
Posts: 265
Liked 9 Times on 9 Posts
Likes Given: 32

Default

Just now, I tried turning the end shut with a cheapie Harbor Freight bit and running the lathe backwards:


It chipped the bit, but not really where it is important, and it did make the diameter larger and will have to turn that down.

It seems that motion of the tool across the surface with some pressure works better than a lot of pressure...
I believe a multi-angle approach is needed.. and that is how I got the last little bit... running it in more than across.. I think a small bearing mounted on a tool may do the trick...


clearwaterbrewer is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
1/2" stainless tube supply adn bending question kegtoe Chillers and Stir Plates 14 01-10-2011 05:21 AM
Any use for 50' of 1/4" copper tube mattd2 Chillers and Stir Plates 9 02-26-2010 09:32 PM
High Temp Food Grade Tube (1/2") bkloos Brew Stands 2 02-08-2010 12:54 AM
4" diamond plate steel/aluminum square tube source Grimtas Brew Stands 6 10-16-2009 08:49 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS