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cbehr · 07-27-2012, 11:43 AM

Will either of these work? I was concerned the ones on the left were too big and the ones on the right were not the right kind? I will be using a 2000mL flask and 1 3/8" bar

**bucfanmike** · 07-27-2012, 12:02 PM

i wouldnt use the ones on the right for sure, the left ones would certainly be strong enough, but they are too big imo. I think they might keep your fan from turning. I know some have gotten the smaller rare earth ones at radio shack and ace. got mine at harbor freight.

**EvolvedBrews** · 07-27-2012, 12:05 PM

I can say for sure the ones on the right will not work. They will not be strong enough. The ones on the left, well I cant tell. I know you need a rare earth magnet. I think they are different from the one on the left though. I'd do some research first. When I built mine I purchased 2 rare earth magnets of a website for next to nothing. I think shipping them was more $.

**bucfanmike** · 07-27-2012, 12:06 PM

for comaprison, HF ones are 5/16" x 1/8 -http://www.harborfreight.com/10-piece-rare-earth-magnets-67488.html
radio shacks are 3/16" http://www.radioshack.com/product/index.jsp?productId=2102642&retainProdsInSession=1

cbehr · 07-27-2012, 12:36 PM

These were the only two that Ace had, I'll have to check out radio shack or try to find a local harbor freight...or locate the proper size on ebay perhaps these that are about 5/16th?

http://www.ebay.com/itm/10-X-Neo-Neodymium-Dsic-Rare-Earth-N35-Magnet-8x3-mm-Strong-Craft-Models-Fridge-/280835513241?pt=LH_DefaultDomain_0&hash=item416319 db99

**TonyR** · 07-27-2012, 12:43 PM

I used 2 of the magnets on the left, they are plenty strong enough. I used them on a 120MM computer fan, I can stir over 3 gallons using a 1-1/2" Length, 5/16" diameter stir bar.