where can I find plans to build a rolling library ladder?

Question

You can buy the ladders, and even have them custom made, but they cost close to 1,000.
I know how to build an angled ladder.
But I am building a loft bed (6 feet high), and I want to have an angled ladder that travels back and forth.
I want it to be safe, and similar in design to the ones at the library, barnes & noble etc.
What hardware would I need, and can I get it at Home depot or Loewes? I am open to interesting ideas.

Answer 1

Have you checked diy.com?