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Old 03-09-2012, 03:11 PM   #1
Jan 2012
Columbus, Ohio
Posts: 22

My buddy and I are making our first stir plate but the only stir bars we have been able to find typically have something called a pivot ring on them. Is this a big deal or should we keep looking to find one without the ring?

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Old 03-09-2012, 03:20 PM   #2
Sep 2011
Robbinsdale, MN
Posts: 796
Liked 77 Times on 64 Posts

One of these stirbars and 2 magnets (links below) make for an incredible noise-free setup that will stir anything (expecially glass gallon jugs with curved bottom). I've tried other computer hard drive magnets and there's no comparison to a pair of these.



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Old 03-09-2012, 04:04 PM   #3
Jan 2009
Posts: 411
Liked 42 Times on 31 Posts

The pivot ring in the middle is a GOOD thing. It helps the ends of the stir bar stay off the bottom and helps it run more quietly. I don't have the pivot ring on my stirbars, but I have added a silicone o-ring to the middle of each one.

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Old 03-09-2012, 04:47 PM   #4
Hang Glider
Beer Drinker
Hang Glider's Avatar
Mar 2007
North Augusta, SC
Posts: 3,220
Liked 212 Times on 155 Posts

yep, o-ring works nicely - a Keg diptube o-ring is a nice fit.

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Old 03-09-2012, 05:21 PM   #5
LandoLincoln's Avatar
Feb 2011
Joliet, IL
Posts: 2,989
Liked 1115 Times on 588 Posts

I bought a stir plate and lost the original magnet that came with it. I bought a six pack of magnets (same size as the original) but the new magnets were octagonal and they had a pivot ring on them. They didn't work well at all. Turning the stir plate to anything higher than about 25% speed threw the bar.

Solution: I took a razor blade and sliced off the pivot ring. Worked like a charm.

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Old 03-09-2012, 08:32 PM   #6
Jan 2012
Posts: 4

Yes the o-ring works great! You shouldn't have any issues.

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Old 03-09-2012, 10:39 PM   #7
Aug 2008
Posts: 363
Liked 6 Times on 6 Posts

FYI, the dip tube o-rings will be rubber so don't boil them with the stirbar. If you decide you want to boil you can use some of these instead:


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