This video demonstrates how to create a cheap, portable magnetic stirrer using an old PC cooling fan. The process involves gluing magnets to the fan, adding spacers to increase the fan’s profile, adding the main platform, making the stir bar, powering the stirrer, and using it. The basic components of a magnetic stirrer are a rotating magnet and a magnetic stir bar.
Professionally-manufactured magnetic stirrers are not very expensive, but if multiple are needed, the costs can add up. If you’re on a tight budget, you can create your own magnetic stirrer from scratch. This simple DIY magnetic stirrer was built to mix E-cigarette vape juice using a simple steel wire as a stir bar. The housing of this model is a little more refined with a magnetic stir bar.
To make a magnetic stirrer, you will need a DC motor from an old inkjet printer, a magnet from a broken 3.5″ hard drive, and a spare AC to DC 5V/2A adapter from a PSP. The video provides a step-by-step guide on how to make a magnetic stirrer from parts you may have at home.
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Hard not to appreciate the ingenuity here. I was considering except its $28 to buy one and that’s about what the materials cost to make this. I really didn’t want to sacrifice the parts intended for other projects so off to. Amazon where they have a couple models and both come with the stirrers. The $35 model is quite large and includes 8 stirrers plus the magnetic rod to pull the stirrers out. It’s approximately 3000ml size. Wanted mine for mixing 3d resins before i start SLA prints and mixing airbrush paints. Having the platform lip so it don’t slide off for any reason is an another benefit. Nice job btw.
Hey have you heard of Victor schalburger he’s an unrecognized german scientist/inventor who dedicated his life to studying water. He was of the likes of nikola tesla but for water. Many of his theories and practices were solely based on aether/nature itself/ implosion instead of explosion which contradicts our current theories and understandings of propulsion itself. Check him out I believe he’ll give you new ideas to explore for water.
Always wanted one of these, great article. Speed control sounds good, but I wonder if you could get higher rpms by leaving on two opposite fan blades and attaching the magnets to those. Magnets in the center of the fan mean high torque but low velocity. Of course you’d have balance issues if you had an eccentric load but I think it could be done.
The stirring element (the magnet) should be embedded in plastic, or it will rust and show physical signs of degradation right after it’s first use in water (let alone in NAOH). And besides a motor with more torque, a simple 555 circuit could have also been employed to provide adjustable speed, as a fixed one will not always work as intended, in practice.