I have been working on improving my incubator. I picked up this incubator (see an earlier post) and had to repair it to get it to work. It is basically an old metal box. As you can see I have adding corrugated plastic to the sides and top. This will help keep the temperature stable for my cultures to grow in. It also makes it much easier to clean, disinfect and sterilize . The metal had a acid type smell of old metal. Once cleaned up and the plastic inserted this helped take away the small. I am not sure how long the plastic will last but it is inexpensive and can be found at hardware stores. Therefore I can replace it when needed.