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Old 07-07-2011, 01:24 AM   #1
ryclo
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Default Basic $5 stir plate

Had a 4 11/16" computer fan from an old computer case, had a 12 volt wall adapter, tore out a magnet from a hard drive. Had to pay $4.95 for the stupid stir bar (hwy robbery) at the brew store,.. doesn't get much easier... I may add a simple voltage divider circuit with a potentiometer to give it speed control if I need it, but I will probably leave it as is...

my first version was a smaller fan and it had a hard time starting without a nudge, this one works MUCH better!

new_stir1.jpg   new_stir2.jpg   new_stir3.jpg  
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Old 07-07-2011, 01:27 AM   #2
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is this sitting right on the fan? Looks good though and is deffinitly doin what it needs to. Cool.

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Old 07-07-2011, 01:30 AM   #3
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sweet, i was looking for a chaep stir plate

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Old 07-07-2011, 01:41 AM   #4
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Quote:
Originally Posted by scinerd3000 View Post
is this sitting right on the fan? Looks good though and is deffinitly doin what it needs to. Cool.
Yes, makes a perfect platform for a 2 liter flask. The hard drive magnet glued to the top is shoter than the edge of the fan so it needs nothing else!! KISS!
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Old 07-07-2011, 01:44 AM   #5
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Nice! That's about as KISS as it gets.

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Old 07-12-2011, 10:11 PM   #6
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Superb! That's a 12 volt out wall adapter ...how many mA?

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Old 07-13-2011, 12:02 AM   #7
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200mA adapter!

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Old 07-13-2011, 12:04 AM   #8
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I can't quite see where the magnet is glued from the picture. Is that it in the center?

Edit: Nevermind, I see it.

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Old 07-13-2011, 02:02 AM   #9
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yep, it would move to the side as I was trying to glue it in place if it was not perfectly in the center. I have another one I was going to add if it needed it but the first one is so close to the bottom of the flask it grabs it great and never throws it...

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