To build the heaviest bottom pan on the market we start with a 3/8” laser cut base and then a single piece formed 3/8” laser cut bridge that spans across the bull gear from the front to rear of the housing. It’s not going anywhere. We finish the side by adding ¼” formed wings and full weld your unit in a precision fixture. To top it off we add our machined drain bung and plug. You will not find a better built unit on the market.