How To Build A Simple Homemade Stir Plate
If you are searching for a way to bring your homebrewing to the next level, it is time to build a stir plate. A stir plate has one simple purpose…stir like a boss. There are plenty of commercial grade stir plates out there for $40-$200. That is nonsense and keeps you from enjoying the second best thing about homebrewing, building stuff.
To maximize yeast and fermentation, it is essential to make a starter. This will help the yeast get a head start and ferment better and faster. If you have no idea what a yeast starter is, Google it and return to this page afterwards.
- A cigar box or project box
- Circle cutter/Hole saw
- A rare earth magnet from a hard drive
- Computer cooling fan (DC powered – typically 12vdc)
- Universal AC/DC power adapter (DC Output voltage must be equal to or greater than the computer cooling fan input power)
- Super glue
- Craft beer to drink
- Electrician tape, electrical crimp connectors or Solder
- Rubber grommet rings
- On/Off switch
- LED power light
- Rheostat/Variable resistor (You can find these at Radio Shack)
- Stir Bar
- 1000ml or 2000ml Erlenmeyer Flask or A mason jar works as well
Here is a quick 5 minute video that I made (after drinking three cans of Resin) showing the different parts and the wiring in my homemade stir plate. I am sure I forgot some things in the video but you will get the idea. That is all that matters.
DIY - Build A Homemade Stir Plate In Minutes
The photo tutorial:
If you have done everything correctly, it should fire up and function properly. Make sure the rheostat is not hot when you touch it. I made the mistake of crossing one wire incorrectly and it got very hot to the touch.
Good luck on your build and I hope my tutorial helped!