Anybody got any leads on a decent stir plate?

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Permalink Reply by Scott H on August 28, 2014 at 8:56pm

Make one man, easy as to do:

https://byo.com/stories/issue/item/398-build-your-own-stir-plate

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Permalink Reply by Cain Harland on August 29, 2014 at 2:25pm

I second that especially if you have access to an old computer.

The parts for mine were:

• Case fan from old PC (easiest with 2 wire but can use others)
• Magnet from old harddrive
• 12v wall plug from old something
• Small click clack sandwich box - cheap as - only $ spent
• 2mm bamboo ply - left over form something - made shims to pack fan tightly in box with holes for magnet to rotate in.

Cut blades off fan glued magnets (2 stacked) to top. Joined 2 wires form fan to 2 from plug. Fit in box. Done.

I tried 5v USB power 1st but too weak some, folks have a variable resistor for speed control but mine works well without.

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Permalink Reply by Scott H on August 29, 2014 at 2:31pm

I use a variable voltage adapter for my speed control works mint. Can get them on trademe for around $15

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Permalink Reply by Peter Smith on August 29, 2014 at 7:54am

I have one of these , they sell about $70 second hand every so often.   

http://www.labwarehouse.co.nz/Magnetic-stirrer_p_909.html

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Permalink Reply by Andy on August 29, 2014 at 6:55pm

I built mine from parts i bought on dx.com , a computer fan, rare earth magnets, speed controller, ac adaptor.  I got the box to put it into from jaycar.  All up around $30.  some amateur wiring and a bit of glue sorted it out.

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