Reddit reviews Bel-Art Spinbar Teflon Octagon Magnetic Stirring Bar; 25.4 x 8mm, White (F37110-0001)
We found 3 Reddit comments about Bel-Art Spinbar Teflon Octagon Magnetic Stirring Bar; 25.4 x 8mm, White (F37110-0001). Here are the top ones, ranked by their Reddit score.
Octagonal shape creates more turbulence and a stronger vortex than a round, cylindrical shape or a polygonal shapeTeflon (PTFE) casing is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinningBuilt-in pivot ring helps reduce vibration and wear during stirringInternal magnet made from alnico V, an alloy of aluminum, nickel, iron, and cobaltCasing material is approved for use in food, drug, and cosmetic applications
For my stir bar i just used one of the magnets from a cheaper version of this magnet construction set where the bar is actually a solid magnet coated in plastic but if it's for food you are probably better off using a legit stir bar for sanitary reasons.
The spacing of the magnets is important so make sure you test it before permanently affixing the magnets.
Also for safety's sake, stir the shake with a metal spoon to catch the bar before drinking. While I'm sure one magnet will pass right through you, if you happened upon another magnet, they could come together and perforate your intestines. I personally try to avoid all types of intestinal perforation but that's just me.
Stir bars I got off of Amazon, both of these worked for me with the magnets I had.
http://www.amazon.com/gp/product/B002VBW5HC
http://www.amazon.com/gp/product/B002VBW5FY
Fan: http://www.amazon.com/gp/product/B003819S8S
Potentiometer: http://www.amazon.com/gp/product/B0002KRE1Q
LM317: http://www.amazon.com/LM317T-Variable-Voltage-Regulator-TO-220/dp/B0002ZPYQ8
Switch: http://www.amazon.com/gp/product/B001TQHA8Y
Now, some of this can add up in the shipping, if you don't have prime, etc. I have heard that you can get most of the electronics at places like radio shack, etc. I order most of my electronics from Digi-Key, Mouser is also good.
I used this stir bar, the main reason it gets thrown is due to the vortex hitting it, but my speed control isn't the most accurate either