Benders I've only made one bender in my life, so I'm no know it all. But heres the basic principal, some of the information is taken from "Ideal Home, Survival Edition", printed by the New Anarchist Review. Benders have been used by travellers for generations and nowadays this semi-permenant structure is commonly seen at peace camps, festival sites, and other gatherings where quick and simple shelter is needed. The design shown here is basic and simple, for further ideas use your noddle. Collect bendy poles about 1 - 2 inches dia. Willow is ideal though hazel or ash will do. Cut to required length(allowing for over lap) and make smooth. Stick poles into ground at least 6 inches deep. Poles should be placed approx 18-24 inches apart, with a larger space left for door opening. Join poles at the top and tie together with string. Tie surplus lengths of poles onto opposite member. Weave thinner poles in and out of uprights, leaving openings for door and windows. Windows can be made from clear polythene. For extra insulation cover with blankets and sow together, this is only worth doing if the bender is going to be left for a time. Now throw your tarpalin over the frame. Tie down with ropes and stakes, using heavy rocks to hold bottom edge. For door cover, cut material wider than the opening, and weigh top and bottom with wood. Tie string to the top of the cover then fix to structure with clips, pegs, thread or whatever. You now have a basic bender, further improvements are no problem. FLOORING Reeds with carpet or rugs do well, though without too much sweat a solid floor can be laid. To do so, level ground and lay joists, fix old doors or narrow timber firmly on top. Benders can be any shape, size or design. Other than getting hold of the materials the only limitation is your imagination. Benders have been built on the back of trucks, bus chassis, barges, and boats..Take it from there.