Following the same principles of a regular, wood drying kiln, you need controlled heat, air flow and moisture control.
Following the same principles of a regular, wood drying kiln, you need controlled heat, air flow and moisture control. Standard kiln drying slowly dries materials of a certain thickness enough to become stable. Sterilization, on the other hand, gets temperature up to 125 degrees for a shorter period of time. The trick is not heating the materials too quickly and risk ruining them. If moisture is removed from wood too quickly, the stress created from the fibrous cells contracting causes the wood to become unstable and move or check. This is how logs release the energy that is created by moisture leaving the wood. So, we need a good heat source that can be controlled and a vessel that will be insulated and allow for airflow. Easy right?