Did magnetic stirrer help

Pindyman

Pindyman

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Okay so after checking out a few threads on here I see that pc fans are used to make some did mixers....now I have a question...as an ex pc moder I have a few spare parts laying around such as pwm pc fans...some pc cases I can chop up and one or 2 psus and hard drives....

Ive been playin around with the idea of setting up the psu to power a pc fan controller that I inturn would connect the pc fan to which has the magnets attached...the question I have is has anyone tried this or is it better to get a dc motor and power supply...

The pc fan cpntoller would be the only item plugged into the psu really and inturn would provide power to the fan or fans depending kn how many I create....

Any feedback would be appreciated fellow vapers
 
I am looking to build / buy one soon. I would go DC.
 
SAVaper said:
I am looking to build / buy one soon. I would go DC.
Click to expand...
mind if I ask where you are looking at purchasing one sir....I saw on on beerkeg site for 960 but has anyone bought anything from them?
 
Pindyman said:
mind if I ask where you are looking at purchasing one sir....I saw on on beerkeg site for 960 but has anyone bought anything from them?
Click to expand...


Hi,
Looks like I will have to build the fan base myself.
http://www.labequip.co.za/wmenu.php have them but like R3600
I will buy the magnetic stirrer bars from them for about R40 ea.

Have not seen the one from beerkeg. Can you place a link?

Thanks
 
I made on cheaply using a 12cm fan. The biggest problem I found with this motor type is low speed torque very weak.

Aside from that it worked pretty well.

These days I just steep for a week and leave out all the fancy equipment.

It is a fun project nevertheless.
 
Sprint said:
I made on cheaply using a 12cm fan. The biggest problem I found with this motor type is low speed torque very weak.

Aside from that it worked pretty well.

These days I just steep for a week and leave out all the fancy equipment.

It is a fun project nevertheless.
Click to expand...
which fan did you use if I may ask...standard pc fan? and what was the rpm of the fan?

@SAVaper the link is http://www.thebeerkeg.co.za/catalog/fermentation-measurement/magnetic-stir-plate-fully-imported.html
 
It was a 120*120*35 PC fan RPM around 1800.

Problem was that it kept throwing the stirbar at high speeds so I had to feed it 10v to bring the speed down.

I would highly recommend a potentiometer of some sort.
 
I'm ordering this

0000223_diy-stirplate-kit_550.jpeg


and then printing this

IMG_2793.jpg


and will also get this

s-l1600.jpg
 
I built one from old PC parts when I just started DIY. It's basic but cost nothing and I only bought stirrer bars. This is what I used:
  • Old PSU for the case
  • HDD for the magnets
  • case fan with four colored LED's
  • headphone jack for power supply
  • on / off switch from PSU
  • Power supply with ajustable voltage

  1. I took out all the stuff inside the PSU and made a hole in the top big enough for the fan, but so the screws can still catch.
  2. I then drilled a small hole in the side for the headphone jack. This will be for the power supply.
  3. I ripped out the magnets from the HDD and glued one of them on the fan. ( test positioning of the magnet so the stirrer bar does not jump, but spins smoothly.)
  4. Solder the wires for the fan to the switch and headphone jack.
  5. Screw the fan down making sure it does not catch the body of the PSU and the fan with magnet can spin freely.
  6. Press the switch back into it's place on the PCU and glue the headphone jack in the hole drilled for it.
  7. Stick the power supply jack into the headphone socket and adjust the voltage 3-12v according to the speed you need or thickness of your juice.
Watch your juice spin with rainbow colors from the fan LED's, my favorite pass time.

I used a clear/blank CD for the flask to stand on, but it's not perfect. I found the metal body influences the magnetic force a bit and it would be better if the fan was mounted on top of the PSU rather than inside, with spacers to keep a clear perspex slab above the fan. Either way it works great and I've mixed 1.5 liters of juice with it already.
 
Sprint said:
It was a 120*120*35 PC fan RPM around 1800.

Problem was that it kept throwing the stirbar at high speeds so I had to feed it 10v to bring the speed down.

I would highly recommend a potentiometer of some sort.
Click to expand...
Im thinking of either this http://www.communica.co.za/Catalog/Details/P0826887425 but not sure if it will work with a pc fan or perhaps using a pc fan controller, http://www.lian-li.com/en/dt_portfolio/pt-fn05/, adapted to work on a 12v power adaptor...alternatively just use a computer powersupply that I have at home,
 
@zadiac where are you ordering that from

@Ernest have you got any pics...the headphone jack for power source sounds intresting since I have tons of electronics laying around at home as a remnant from my modding days
 
Pindyman said:
@zadiac where are you ordering that from

@Ernest have you got any pics...the headphone jack for power source sounds intresting since I have tons of electronics laying around at home as a remnant from my modding days
Click to expand...

Yes, but at home. Will add later.
The headphone jack worked well firstly because the old pc had them and because I used an adjustable power supply with multiple jacks in various sizes.
 
@zadiac if that heating mat is really R53 order one for me as well lol will eft cash to you
 
I'm Al for group buy lol

Sent from my SM-N910F using Tapatalk
 
Morning gents

so I manage to find a tut on the exact stirrer I wanna make and it turns out that I have everything laying around except for a potentiometer....soooooo this is a plea for anyone that has an old fan speed controller laying around at home that they are not going to be using...
 
Pindyman said:
Morning gents

so I manage to find a tut on the exact stirrer I wanna make and it turns out that I have everything laying around except for a potentiometer....soooooo this is a plea for anyone that has an old fan speed controller laying around at home that they are not going to be using...
Click to expand...


Talking about a fan speed controller, now that it is winter I noticed that one of the fan heaters is no longer heating. The fan is running and the heater is oscillating but no heat. It has two switches. One of those temp control knobs and one for fan speed.

Do you think any of them will work?
 
To be Honest, I also played around with this a while back, When I started out. It was more of a mission than anything else...

Sweet and short of it.... If you are going to attempt to mix anything higher VG than 70, you will not have success with a mag stirrer like the one you are trying to build.. The fluid is to thick and you end up having to heat the juice to try and mix it. and even then you can only do small amounts at a time... I ended up purchasing a blender that is dedicated to my juice making process... it works like a charm!!!

You can try the mag stirrer and see how successful it is in your case, but I'm not recommending it to anyone soon...

Hope that helps, hehe
 
JW Flynn said:
To be Honest, I also played around with this a while back, When I started out. It was more of a mission than anything else...

Sweet and short of it.... If you are going to attempt to mix anything higher VG than 70, you will not have success with a mag stirrer like the one you are trying to build.. The fluid is to thick and you end up having to heat the juice to try and mix it. and even then you can only do small amounts at a time... I ended up purchasing a blender that is dedicated to my juice making process... it works like a charm!!!

You can try the mag stirrer and see how successful it is in your case, but I'm not recommending it to anyone soon...

Hope that helps, hehe
Click to expand...

Did not think about that. Thanks for the input.
 
JW Flynn said:
To be Honest, I also played around with this a while back, When I started out. It was more of a mission than anything else...

Sweet and short of it.... If you are going to attempt to mix anything higher VG than 70, you will not have success with a mag stirrer like the one you are trying to build.. The fluid is to thick and you end up having to heat the juice to try and mix it. and even then you can only do small amounts at a time... I ended up purchasing a blender that is dedicated to my juice making process... it works like a charm!!!

You can try the mag stirrer and see how successful it is in your case, but I'm not recommending it to anyone soon...

Hope that helps, hehe
Click to expand...
Thanks for the input....my mixes are only 70 vg so the mag stirrer will work well also....not planning on making bulk mixes max would probably 200ml at a time as I mix for myself not to sell...

The idea is the mag stirrer will be set too low and left for some time to allow molecules to bond effectively....a heating pad may be used to add some heat while stirrer is running...ps what fan did u use as the fans I have are kinda high spec and capable of running at 10 000 rpm

Will let u guys know how it turns out



Sent from my SM-N910F using Tapatalk
 
JW Flynn said:
To be Honest, I also played around with this a while back, When I started out. It was more of a mission than anything else...

Sweet and short of it.... If you are going to attempt to mix anything higher VG than 70, you will not have success with a mag stirrer like the one you are trying to build.. The fluid is to thick and you end up having to heat the juice to try and mix it. and even then you can only do small amounts at a time... I ended up purchasing a blender that is dedicated to my juice making process... it works like a charm!!!

You can try the mag stirrer and see how successful it is in your case, but I'm not recommending it to anyone soon...

Hope that helps, hehe
Click to expand...


I only mix 70 Vg and high Vg juice, 100 ml at a time and never heat my juices. It works well at 12 volt with a smaller stirbar.
 
JW Flynn said:
To be Honest, I also played around with this a while back, When I started out. It was more of a mission than anything else...

Sweet and short of it.... If you are going to attempt to mix anything higher VG than 70, you will not have success with a mag stirrer like the one you are trying to build.. The fluid is to thick and you end up having to heat the juice to try and mix it. and even then you can only do small amounts at a time... I ended up purchasing a blender that is dedicated to my juice making process... it works like a charm!!!

You can try the mag stirrer and see how successful it is in your case, but I'm not recommending it to anyone soon...

Hope that helps, hehe
Click to expand...
Depend on the motor beneath the stirbar, mine is from a 120mm case fan and i mix 80/20 and it stirs even before the mix is on 30degrees
 
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