hi, I built a 2 metre one, just a bit smaller than 7 foot. I can take mine to pieces as we used bolts to hold it together. The instructions for making one are on my website, and if you want, I can take photos of the joints, with their bolts.
I did find one error, once I had drilled all the holes - I should have made the nails on each side an odd number, instead of an even number, grrrrrr! It is possible to compensate for it, but is better starting off right. I also made mine of Meranti moulding, as its reasonably lightweight, and its still heavy! I store it on my curtain rail in one piece - taking it to bits would be easy enough, its getting it back together that could be fun! It was also made on the kitchen floor, as I did not have a shed or a work bench, and nor did I need to have any woodworking skills.
PM me if you want any more info.