How would we vulcanize the rubber?

Step 1: Obtain a strong heat source. Since Vulcanization requires temperatures of around 200*C, this is necessary. Some possible sources could be:

1. A wood or coal burning fire

2. Hot Steam

3. Burning of Fossil Fuels (possibly obtained by another group)

Step 2: Obtain some sort of pot or bowl made of heat conductive materials. This would be necessary to mix the ingredients.

Step 3: Obtain crude rubber (as described above) and add it to the reaction

Step 4: Obtain sulfur (as described above). To determine how much sulfur to add, it must be decided what type of rubber is needed. If we wanted hard rubber (eg. for a boat hull), we would add 30% sulfur. If we wanted softer, more flexible rubber (eg. shoe soles) we would add 5% sulfur.

Step 5: Allow the ingredients to react for 5 hours.