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Author: Subject: Using an Electric Drill as an Overhead Stirrer
JJay
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[*] posted on 2-1-2016 at 11:23


Quote: Originally posted by chemrox  
I use glass shafts with PTFE shaft holders and flexible shaft through glass adapter. Both work depending on the conditions. Some mixture are too dense to work with stir bars and some reactions require constant effective stirring. Using silica substrates are one example; STAB works better when well stirred. We should stir more and use less solvent IMHO.


That would save time recycling solvents.... I have been using a PTFE stir paddle. It is probably not a good choice for stirring molten lead and zinc but works great for most of my experiments.
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aga
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[*] posted on 3-1-2016 at 09:11


Today i needed a side stirrer, as i was using a spirit burner.

After faffing about with ring bearings and some complicated electromagnetic ideas, this much much simpler solution occurred to me :-

Attachment: stirrer.mp4 (4.8MB)
This file has been downloaded 309 times

snapshot.png - 222kB

[Edited on 3-1-2016 by aga]




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JJay
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[*] posted on 3-1-2016 at 11:17


Nice :) As time goes on, I'm seeing fewer and fewer reasons to invest in expensive stirring and heating apparatus.
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aga
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[*] posted on 3-1-2016 at 12:27


Simple, multi-use, cheap ... need i go on ?

Edit:

Some Expensive equipment is well worth the price (e.g. measuring instruments).

Heating and Stirring aren't really high-tech enough to warrant a large $ value, unless they do it with precision.

[Edited on 3-1-2016 by aga]




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JJay
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[*] posted on 4-1-2016 at 03:25


Quote: Originally posted by aga  
Simple, multi-use, cheap ... need i go on ?

Edit:

Some Expensive equipment is well worth the price (e.g. measuring instruments).

Heating and Stirring aren't really high-tech enough to warrant a large $ value, unless they do it with precision.

[Edited on 3-1-2016 by aga]


Some expensive equipment definitely is worth the price... I actually have been using a $5 pocket scale for the past several months, but a better scale would be nice.

Yet I can do more with a $11 hot plate and a $20 drill than I could with a $400 magnetic stirrer.

files.php.jpg - 792kB

(And yes, this is actually being run in a public restroom. I'm using immersion heaters in the image, but I now have a 1000 watt hotplate.)

[Edited on 4-1-2016 by JJay]
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