Panbrake for folding sheet metal, which one to build?

[KustomsbyKent]

I have a lot of experience folding/bending sheet metal.
Before you dive into making a folder or pan brake, what do you intend to do with this piece of equipment? How thick, how wide? Does it really need to make a closed box, or that just a nice to have feature?
How much money & time are you willing to spend on the build?
If you just need to make some occasional bends in light sheet metal, then a simple pan brake like this might suffice. https://www.harborfreight.com/36-in-...and-62335.html
I have that particular one, and most of the time, I can adjust my design to work with it.
I have purchased the full on finger box & pan brakes for engineering workshop at my corporate job, and those are extremely heavy duty and expensive. The removable fingers are nice, and the adjustability for various thicknesses is nice. However, there is a limit to what one person can bend in both thickness and width before you hurt something (yourself!). Aluminum 3mm at 1.24M wide or 1/8" at 48" wide is about the limit. Steel would be much thinner.
I'm not suggesting to not build something, but a simply built one might suit your needs initially. If you have the time and money, then go all out, and build it heavy with full adjustability, like this one:
https://www.baileigh.com/finger-brake-bb-4812

Thickness of material will drive a lot of your size and weight of machine... If you look through the Baileigh Industrial website, you'll see the differences in the price/size/weight vs thickness & width.
https://www.baileigh.com/metalworkin...t-metal-brakes
I have purchased and used one just like this one, different brand though. It is heavy, and was overkill for most of the things we did on it.

I just use Baileigh as an example, as they have good pictures and specs listed, I have no affiliation with them, nor to I recommend them over any other manufacturer.

If you can describe in more detail what you're doing, I can provide more help on what would work for you.

Thanks
Kent