Portable Metal Swing Frame Design

I need a compact, fold-away swing frame that I can set up both indoors and outdoors. Metal is the preferred material, and the structure must safely support up to 200 lbs (90 kg).

Here is what I’m looking for:
• A straightforward blueprint or CAD drawing showing dimensions, joints, and hardware.
• A concise parts list with recommended metal grades, fasteners, and finish to resist weather when used outside.
• Simple assembly instructions so I can build or have it fabricated locally.
• Basic stability or load-bearing notes confirming it will handle the stated weight without excessive sway.

Keep the design light enough to move easily, yet sturdy enough for regular use. If you have previous experience with portable gym rigs, playground equipment, or foldable structures, please mention it and share examples. I’m ready to start as soon as I find the right approach.