04.30.09
Polypropylene Welding
This is my first attempt at welding plastic. What I discovered though is the technique is more like hot gluing, only on steroids. I used a table saw to cut the polypropylene sheets. I learned a very valuable lesson. If these sheets are in the saw blade long enough to get hot, they will melt and adhere to the blade causing the sheet to be pulled forcefully from your grasp and flung to wherever. I would highly suggest the use of a battery powered skill saw for cutting the plastic. The saw is easier to control.
Next came the welding. As you can see in the pictures I used picture frame clamps to hold the box. The box turned out pretty good. Since I will be using Gel Filled batteries I will not be enclosing these boxes.
