I purchased fixed length poles for a pyramid tent from Quest Outfitters. I'm looking for ideas on how to make adjustable poles. I've seen (on tent poles and hiking poles): a row of holes and a button; outside clamp lock; internal twist/expand lock; external cam lock.
I've had no luck finding the buttons. The cam lock is kind of large. I don't know if I can find internal twist/expand locks that fit my 0.742 diameter poles (I have a large pyramid tent, 11 feet on a side). And I have no clue where to find lightweight external clamp locks.
I'm open to suggestions, both on design and on where to find parts.

