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Home Brew Forums > Home Brewing Beer > DIY Projects > Chillers and Stir Plates > My Stirplate... Cheap and Easy Build...
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Old 12-30-2011, 05:18 AM   #891
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Here are my stir plates. If you need one...I'm just saying.

image-1240866847.jpg

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Old 12-30-2011, 01:00 PM   #892
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Quote:
Originally Posted by coypoo
First attempt: fail. Getting stronger magnets tomorrow.
I had the same problem with the hard drive magnets. They just don't have enough strength.

I purchased the neo disc magnets recommended about 5 pages ago and they work perfectly.
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Old 12-30-2011, 04:32 PM   #893
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Quote:
Originally Posted by TrainSafe

I had the same problem with the hard drive magnets. They just don't have enough strength.

I purchased the neo disc magnets recommended about 5 pages ago and they work perfectly.
Good to hear. I'll look for those when I get out today or tomorrow
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Old 12-30-2011, 11:20 PM   #894
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Double time to sit around twiddling my thumbs at work -



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Old 12-31-2011, 02:09 AM   #895
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I got some good magnets but my fan spins too fast, so I need to get a resistor (I don't have any power cords that are less than 9V). Do I put it before or after the rheostat?

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Old 12-31-2011, 07:43 PM   #896
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You can go small in series or as a voltage divider so long as it's large enough to cover the power needs.

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Old 12-31-2011, 07:49 PM   #897
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Quote:
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You can go small in series or as a voltage divider so long as it's large enough to cover the power needs.
Would a 1/2 watt 100 ohm be good? I'm terrible with electricity stuff, so im just guessing at all of the different watt/ohm combination resistors

I wish I had a 6V power cord.....
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Old 01-01-2012, 12:22 AM   #898
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Quote:
Originally Posted by coypoo

Would a 1/2 watt 100 ohm be good? I'm terrible with electricity stuff, so im just guessing at all of the different watt/ohm combination resistors

I wish I had a 6V power cord.....
WTH is a 6V power cord? I assume you mean a wall wart/AC adapter?
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Old 01-01-2012, 02:07 AM   #899
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Yes.

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Old 01-01-2012, 07:33 AM   #900
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I would see this atm when i'm 3 sheets to the wind. Just keep in mine I'm about a liter of vodka and a little over a bottle of champagne in so gauge accordingly.


Now for attempt number two at typing this.... That resistor should be safe up to 7v depending on how you wire it. As with anything, check it for heat before leaving it unattended after some test time and you should be fine. I presume your comfortable with a little testing as you can buy a complete unit for $40 or less with a warranty. also, be careful if you go the VD route as I just either fried a fan from that or (more likely) lack of magnet balance.

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