I want to make a free-standing frame for a TRX/gymastics rings type system.

I don't think I can drill holes into my walls in my apartment to attach them to, so I thought a free-standing frame would be a good solution, but I can't find plans or prototypes anywhere! Ideas?
I would be open to other ideas that didn't involve a frame, as long as they didn't require me to drill holes into walls or rely on possibly unstable studs in an old building.  I'd like something that wasn't in a door frame, but if its easy to use and put up and take down, I'm in. 

Picture of I want to make a free-standing frame for a TRX/gymastics rings type system.
trx_review.jpg
craftyv6 years ago
Looks brilliant, but freestanding?
What about the activity, swinging, lifting, pulling etc. Wouldn't that make it unstable? I hope you solve this because it will be epic.