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Old 05-28-2012, 03:15 AM   #1101
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Well I got the wiring all done correctly after some tinkering. I picked up a 2000 ML flask and a 1" stir bar. The fan i had laying around was a 120mm so it actually fit into the enclosure snugly. The washer seemed pretty centered. Even after all this the stir bar:would jump around and then get thrown, even on the lowest setting. My guess is it is the spacing of the magnets from each other. Now to remove the super glue and reset them.
Tisk, tisk, is that glue on your fan blades?
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Old 06-21-2012, 12:35 AM   #1102
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Thanks for this thread, I just built one myself.

On a side note, how i got the HD magnet separated, was I had 2 wrench grips and then bent the metal that was holding it. once it was bent the magnet easily came off. and that way I didnt have to worry about cracking/breaking the magnet.

The metal was fairly soft too.

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Old 06-22-2012, 04:03 AM   #1103
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Thanks so much for this idea and the expertise you brought to the table. Fortunately I had enough old garbage lying around that the only thin I needed to buy was the stir bar itself. I used an old computer power supply fan, its housing and its rocker switch. I took a rheostat out of an old junked CB radio for my speed control. I found that the 6V cell phone charger wasn't providing enough juice for the fan, so I spliced the computer P/S cord into a 12V motorcycle battery tender. As soon as my beaker and stir bar arrive it'll be time to test it out - just in time for my next batch!

Andy

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Old 06-22-2012, 02:42 PM   #1104
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Got my first starter spinning right now for my LHBC Big Brew I will be bringing home Saturday. I started it yesterday evening. 3L starter using Wyeast 1187 Ringwood Ale.

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Old 06-28-2012, 01:32 AM   #1105
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Just whipped this up. Great thread and instructions.

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Old 07-08-2012, 12:56 AM   #1106
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Can one use something like a bolt (with the head cut off) covered in heat-shrink tubing instead of buying a "stir bar"?

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Old 07-08-2012, 01:26 AM   #1107
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Can one use something like a bolt (with the head cut off) covered in heat-shrink tubing instead of buying a "stir bar"?
I would lean towards no. Stirbars are magnets as well and I think that makes a big difference. I think you also might run into some sanitation issues with the shrink tubing.
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Old 07-08-2012, 03:51 AM   #1108
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Can one use something like a bolt (with the head cut off) covered in heat-shrink tubing instead of buying a "stir bar"?
I will give a definitive No, because the object on top has to be magnetized, otherwise you will have unpredictable spin patterns, and that will cause all sorts of problems. Just pony up the 4$ for the stir bar... it will be worth it

Also make sure you get a stir bar with a pivot roll in the center. It will make the spinning a lot easier, and when the yeast starts to build up you will have problems with it if you dont... That is the problem I ran into, now I have a bar with a pivot and its great.
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Old 07-12-2012, 07:21 AM   #1109
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I just got a 115 volt ac fan and was wondering if it will work and I'd there was any thing I could use to control speed

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Old 07-13-2012, 02:22 AM   #1110
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Default Great info!

I finished making my first stir plate tonight. I had some trouble with the stir bar until I raised the fan about a half inch or so inside the box. Once I did that, I was golden!

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