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07-27-2008, 04:00 PM
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#1
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Senior Member
Join Date: Jun 2007
Location: Arlington, VA
Posts: 235
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Create gallon markings on a brewpot?
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Is there a way to mark the inside of a brewpot with gallon markings. I bought my brewpot on the internet and didn't realize it didn't have the gallon markings (thought it was standard). I thought I would be able to keep track of the mash/sparge runnings but I lost track quite quickly. Having markings in my pot would help, so instead of remembering how much wort comes out of my mash tun, all I have to do is remember how much comes out after the five gallon marking.
I thought about marking it with a sharpie, but figured that would wear off in a stainless steel pot? Any ideas/suggestions?
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07-27-2008, 04:03 PM
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#2
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United States Mashtronaut
Join Date: Nov 2006
Location: Edmond, OK, Oklahoma
Posts: 2,983
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Mark your brew spoon in half gallon increments as you fill it up. I'm not sure how long it will last with a sharpie, but I use a yard stick that has been notched and it works great for any keg I have as a measuring tool.
__________________
"Beer... Nutritious and Delicious!"
"It's like a 15.5 gallon Mr. Beer!"
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07-27-2008, 04:17 PM
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#3
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Post Hoc Ergo Propter Hoc
Join Date: Dec 2007
Location: "Detroitish" Michigan
Posts: 36,026
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Quote:
Originally Posted by WortMonger
Mark your brew spoon in half gallon increments as you fill it up. I'm not sure how long it will last with a sharpie, but I use a yard stick that has been notched and it works great for any keg I have as a measuring tool.
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That's what I did...I tired scratching the inside of mine, but gave up. Doing my spoon was much easier.
__________________
Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman
I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew
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07-27-2008, 04:20 PM
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#4
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United States Mashtronaut
Join Date: Nov 2006
Location: Edmond, OK, Oklahoma
Posts: 2,983
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Yep, in the brewery I learned this technique, lol. We had a wooden curtain rod notched with gallon setting that worked great in that huge kettle. I just had to transfer that to my home brewery. I even use it when cleaning kegs, just dip and check in that tiny Sanke hole, lol.
__________________
"Beer... Nutritious and Delicious!"
"It's like a 15.5 gallon Mr. Beer!"
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07-27-2008, 04:33 PM
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#5
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Senior Member
Join Date: Apr 2007
Location: Dallas
Posts: 1,630
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How much does temperature affect water volume? Has anyone calibrated their notched measuring stick for different temperatures? I made mine when ground water was 80 degrees. It's a little cooler than that in the winter (maybe 70 degrees). But I measure the post-mash pre-boil runnings to calculate mash efficiency, and that is a much higher temperature than my baseline measurement temperature of 80 degrees. How much off would a volume measurement at 150 degrees be compared to 80?
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07-27-2008, 04:40 PM
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#6
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Post Hoc Ergo Propter Hoc
Join Date: Dec 2007
Location: "Detroitish" Michigan
Posts: 36,026
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Quote:
Originally Posted by billtzk
How much does temperature affect water volume? Has anyone calibrated their notched measuring stick for different temperatures? I made mine when ground water was 80 degrees. It's a little cooler than that in the winter (maybe 70 degrees). But I measure the post-mash pre-boil runnings to calculate mash efficiency, and that is a much higher temperature than my baseline measurement temperature of 80 degrees. How much off would a volume measurement at 150 degrees be compared to 80?
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That's just a wee bit too anal for me to be concerned about... 
I'm only really using it to guestimate the volume of wort in the kettle after I've drained my mashtun and sparged, to see if I need anymore...and to see just how much loss I have post boil....
For anything that requires any measure of accuracy I use measuring cups.
__________________
Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman
I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew
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07-27-2008, 05:03 PM
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#8
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Mmm...beer.
Join Date: Jul 2006
Location: Southwest
Posts: 12,350
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The graph on this page shows approximately 4% difference between room temperature water volume and boiling water volume. So, for a 6.5 gallon boil, the volume difference is ~1 qt. To me, that's pretty negligible, but it could be significant for a more anal brewer. |
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07-27-2008, 07:14 PM
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#9
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Senior Member
Join Date: Apr 2007
Location: Dallas
Posts: 1,630
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Hmmmmm. Now I guess I'll have to work up a temperature-volume sliderule dipstick for accurate measurements at various temps.
Seriously, I think a quart at 6.5 gallons and approaching half a gallon for a 12 gallon batch is significant enough to make it worthwhile to at least calibrate a stick at two temps... average groundwater temperature and mash runnings temp. Or at least correct for the difference on paper. |
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07-27-2008, 07:20 PM
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#10
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Moderator
Join Date: Jul 2006
Location: Bee Cave, Texas
Posts: 11,971
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I used a dremel to mark the 7 gallon level and the 5.5 gallon level. Make sure you have your immersion chiller in place when you mark your finished level.
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