Even for something like HDPE? I did a project a while ago that was effectively a pontoon workboat. We used HDPE pontoons in lieu of stainless steel and the cost

Even for something like HDPE? I did a project a while ago that was effectively a pontoon workboat. We used HDPE pontoons in lieu of stainless steel and the cost savings was about 25%. I assume that the raw materials (basically large diameter HDPE pipe) and plastic welding tools were just that much cheaper/easier. I was interested in doing a new HDPE product development on my own, but I'm a bit nervous this is a deep tooling rabbit hole.