Magnetic stir plate

[brenmurph]

all rite just raided kellies fridge magnets to start my stir plate project.....she will never notice her monkey has no hands when she comes home from work 

[pob]

These might work better.
10pcs Super Strong Round Neodymium Countersunk Ring Magnets
http://www.aliexpress.com/item/10pcs-Super-Strong-Round-Neodymium-Countersunk-Ring-Magnets-20mm-x-5mm-Hole-5-2mm-Rare-Earth/32267847311.html

For the monkey's sake.

#WWF
#HelpTheArmlessMonkeys

(Edit: typo in link fixed)

[Beerbuddha]

Is nothing sacrednot the monkey

[Leann ull]

I just bought some of these, I have a few going spare to save you messing with Kellies monkey
http://www.ebay.co.uk/itm/1-5-10-20-50-100x-Super-Strong-Disc-Round-Rare-Earth-Neodymium-Cylinder-Magnets-/311193707508?var=610374497113

like Volvo tyres don't forget the Shipping Forecast for Kildare

[brenmurph]

  the campaign was successful. Ill accept CH's kind offer in an effort to save the monkey!

[Leann ull]

You in Lamberts on Sunday Mr. Murphy otherwise I'll drop in some time?

[Jonnycheech]

all the techys in the club, I would have thought this would be such a simple thing to make, is it not  just a computer fan in a box with a variable resister..@

total cost fan 5 euros, junction box 5 euros, variable resistor 2 euros.

I dont use one so cant comment and never tried making one coz if its that simple to make I might start putting a few together I think I recall dempsey or partrige had a home made one

I made one with all the above bits and and used a cigar box for the housing. I gave up on it after coming home more than once to a starter that wasn't stirring due to inbalance of the magnet I presume. It was a pain to get started too, finding the correct location and speed to get it started was tedious. I reckon my magnet was too weak. In the end I splashed out on the digital stirrer and I have no regrets. If I had just bought it in the first place it would of saved me hours of my time which is worth the outlay IMHO.

[molc]

Yeah I love DIY, but when there's calibration involved, it's just worth a little extra money if you can set and forget. With mine, I put the magnet into the flask, put it on the base and turn it on. Magnet always locks in first time and never has a hickup.
I've used other people's DIY jobbies before and it was always so damn fiddly to get the magnet locked in and started without skipping around.

Here it is with a 5L flask: https://youtu.be/UsD-8G7yvzA?t=185

[brenmurph]

 

You in Lamberts on Sunday Mr. Murphy otherwise I'll drop in some time?

as you know you can drop in anytime you are heading up r down the M&. We are 45 seconds from the motorway junction 

liks like we r heading to wex

[Leann ull]

actually 50 secs last time, damn that tractor, see you sunday so

[Leann ull]

my first one was 45 bucks from the us when the dollar was 1.45 and I really like the look of that but i'll stick with the computer fans and variable voltage   anyone want to organise a group buy?

[Kevin O'Roundwood]

As other have said a gentle stir not a beating 
I use a computer fan for 5 litres and using a variable power controller or sliding power socket which does the job, the trick is always finding that point where the yeast is just in suspension but not getting thrashed

What sort of variable controller do you use? Tried looking on ebay but all sorts of weird and wonderful things start popping up. I presume it's basically a potentiometer...? but it's been nearly 20 years since i fiddled with one of those at school and now they look strange and scary to me

[Kevin O'Roundwood]

Ah hang on... can you adjust the power to the fan by simply adjusting the voltage switch on this?

http://www.amazon.co.uk/gp/product/B0083S19YW/ref=pd_cp_147_3?ie=UTF8&refRID=0CPWJF1XRQVE4BGHD9DH&dpID=41s1vfDHclL&dpSrc=sims&preST=_AC_UL70_SR70%2C70_

ie. When the switch is at 12V the fan's working at max and 3V it's at min?

EDIT:

Just found this thread - explains all! Thanks Ciderhead
http://www.nationalhomebrewclub.ie/forum/index.php/topic,5056.msg63051.html#msg63051