I have seen a quite a few threads popping up but have yet to see a "Show your...." thread for stir plates, so here it is.
Just finished mine today. I wanted the ability to run multiple starters at a time so this is what I came up with. It is in essence 4 stir plates controlled by 1 unit. It took maybe an hour and a half to put it all together.
Fan Controller $10
Project Box $7
Magnets $0.41 x 2
Machine Screws #10-32(I Think) 3” Home Depot $2
110AC - 12VDC Converter Wal Mart $18
First you need to mount the fan to the project box. I centered the fan on the cover and drilled four holes using the fan mounts as a pilot. Once I had the bolts installed I spun nuts down to lock them in place and then placed another set on to hold the fan up. Once the fan was sitting on the bolts I glued the magnets to the center of the fan giving them appx. a 1.5" spread.
After the fan was mounted I ran the existing three pin wires out the back so that they could plug into the controller. I used the same method for all 4.
The power supply and controller were the more complicated if you even can call it that. Wire the power supply to what would be the black and yellow pin on the controller and then extend the three pin pig tails to hang out the back of the project box so you can plug in the remote stir plates. I mounted the controller by just cutting a hole in the boc and fastening it in. As you can see I need to make a trim panel. The dremmel got a little excited....
So after it was all said and done I have about $75 -$80 in total for all 4. There are cheaper ways to do it but it fit my requirements and was a fun and easy project. Now lets see yours!