Intro: Make Lye/ Potassium Hydroxide
1. Set up the bucket to collect lye
2. Pour water through the bucket or wait for it to rain
3. Collect the liquid and boil off the water
This setup can produce tap water lye and/or rain water lye, which is more concentrated.
Visit http://renewburbia.blogspot.com/2012/07/how-to-make-lye-potassium-hydroxide.html for complete instructions