Top hat design plans for 55gal drum

[juicegoose]

I was going to begin construction of a top hat design on a plastic 55gal drum this weekend. the inlet and outlet will be 6" and I was planning on making the inlet rectangular.
Can anyone pass along any build threads that show the process of creating the bottom plate with using plastic for the sides. More importantly I was intersted in how to build the rectangular inlet box and how the plastic interacts with it.

[revwarguy]

Here's a video series you can watch to give you some ideas to get started:


https://www.youtube.com/watch?v=9P4ORN_iUTs

Hope this helps,