Miscellaneous Practical Exercises

PE 40: Engineer and Construct or Assemble a Gasifier

PE 41: Make Biodiesel Fuel

PE 42: Engineer and Build or Assemble a Rocket Stove

PE 43: Make Vinegar

PE 44: Make Lye (Potassium Hydroxide)

PE 45: Make Soap,1621,147187-255198,00.html

PE 46: Make Detergent

PE 47: Make an Off-grid Washing Machine

PE 48: Make Candles

PE 49: Make a Solar Water Heater