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Old 11-20-2012, 04:51 PM   #1181
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Yes, it is a 10 (just took it out of the package). I also put a 100 inline and that made it too slow. I will just pick up another rheostat and try it. Maybe I should get a higher ohm one? Could it be that when I initially put it to the 19 volt PS I fried it?

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Old 11-20-2012, 05:46 PM   #1182
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It's possible, I guess. Did you notice it being hot or smelling burned? May as well try another rheostat.

Out of curiosity, what are the specs on the fan?

For what it's worth, a slow spinning stir plate is better than a faster spinning one. I keep mine at 25-30% speed at the most. When it gets too fast the stir bar gets spun off easily. You don't need a huge vortex, you just need to keep the liquid turning with a small dimple to get air into the solution. So the 100ohm may work well by itself, i.e., without a rheostat.

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Old 11-29-2012, 10:10 PM   #1183
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So I was messing around with magnet placement and whatnot with just using two sided tape for temporary mount until I knew where I wanted them permanently placed. As you see the magnetism pulled the stacks together and layers them down. So I figured what the heck and gave it a try. Seemed to work pretty good. Figure I will just have to raise it up closer to the lid, but that's it. Anybody ever put their magnets laying down?

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Old 11-29-2012, 10:11 PM   #1184
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Btw the fan specs are 12v .16a.

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Old 11-30-2012, 03:29 AM   #1185
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Just build a stirplate using this thread as a guide and it turned out awesome! Very very quiet. the only issue I had was that I bought a computer fan that came with a rheostat but I was unable to use the rheostat because of the way it was built (with little circuit boards attached). Now all I need is a flask... How many more days til Christmas?

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Old 11-30-2012, 12:46 PM   #1186
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Does anyone have a good method for centering a washer (to be glued) on the fan? I've built a stir plate but having a hard time getting the washer centered so the fan is wobbling quite a bit.

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Old 11-30-2012, 04:45 PM   #1187
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I've heard if people using a 60 second epoxy so that they have time to adjust it before it sets

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Old 11-30-2012, 06:53 PM   #1188
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Quote:
Originally Posted by Kirch3333
I've heard if people using a 60 second epoxy so that they have time to adjust it before it sets
That could work so set it, turn it on for a second to get spinning, adjust. I used krazy glue last time... Nope
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Old 12-02-2012, 05:09 AM   #1189
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Built it.. Turned out awesome and is spinning away a starter as we speak

Quote:
Originally Posted by Kirch3333 View Post
Just build a stirplate using this thread as a guide and it turned out awesome! Very very quiet. the only issue I had was that I bought a computer fan that came with a rheostat but I was unable to use the rheostat because of the way it was built (with little circuit boards attached). Now all I need is a flask... How many more days til Christmas?
Nice on making the removable part the top! Wish i would have thought of that.. could have saved me a whole lote of trouble with how many times I had to pull it apart to get it just right.

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I've heard if people using a 60 second epoxy so that they have time to adjust it before it sets
I used a 5 min epoxy.. let it set for a minute so it was slightly tacky and then fine tuned till my hearts content. Worked well for me.
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Old 12-09-2012, 01:49 AM   #1190
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I am looking to build one of these, but I wanted to check and see if anyone had a couple magnets or one hard drive magnet they would sell?

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