So in addition to just a neat frame, you also need a glass substitute, correct?? Make a two frame pane. 1) frame no one will ever see, this is what you'll use to attach your clear fake glass, then add fake glass, then attach your aesthetically pleasing frame over your original frame.
I have one idea just off the top of my head, go to your local Restuarant depot , or google, large rolls of plastic wrap, (think Glad cling wrap on steroids). I don't know where by you, but there's a wholesale Restuarant place near us that sells rolls 3 feet in width. Create a basic wooden frame (2x2?) then wrap that frame in cling wrap a thousand times, and of course by a thousand I mean like 3 or 4 times, then put the real framing around it (maybe dirty aluminum strips for your industrial look?)
But Bobby! I don't want people to see the lines from the plastic wrap! Well Johnny, make your outer frame (the aluminum one I mentioned, or whatever you choose to do for aesthetics) and make a couple rows or columns over the actual glass part(aka your cling wrap on steroids) to help hide the seams/wrap lines of the Alex Rodriguez wrap. (Steroid joke)
To help with the clarity of the a-rod wrap (okay the steroid jokes are getting old, sorry!) use a latex paint to distress it, find a gross color of OOPS paint at your local mom and pop killing box store for $0.50 and water it down in a spray bottles, and spray the heck out of the wrap and just let it drip and dry on its own. (Maybe a hideous brown then a second layer of a little hideous green in the corners? Honestly, the real question is why anyone thought those colors would work in their home in the first place.....yuck!)
I hope I helped, or at least saved you from expensive plexi.