I link below to one manufacturer here in the US called Milliken who has a variety of shapes available including 1" x 1" and 1" x 2" in wall thicknesses from .125 down to .063, as well as a couple other shapes.
In general I would have to say it bends pretty similarly to other rectangular tubing which means better to use a roller than not and the tighter the bend, the more the distortion but I think for the purposes of a dodger
it should do just fine.
My experience has been with MIG welding but having you enquire about end-fittings makes me realize that thanks to the rectangle shape, this extrusion would lend itself fairly well to mechanically fastened gussets for connections. While a little erector-set-ish, this approach would make it a lot more accessible.
One of the issues I have in the project
, that others may share, is that my boat was not built to include a coaming for the dodger which usually means either making one, which is a real PIA, or fastening to the deck
with snaps or whatever, a method a view as really unsatisfactory.
Thinking back about another project has got me going on trying to use a bolt-rope type extrusion, as pictured below, to secure the deck edge of the fabric. On the down side, it means a lot of screw holes to be drilled and filled with epoxy
to secure the bolt rope
On the up side, that is a lot less work than making a coaming. The bolt rope
extrusion is fairly small in section and should be relatively easy to make it conform to the curvature where the deck camber and the dodger meet.
Also, since the deck is strong enough to support itself, anything more in terms of structure is not needed to simply attach the canvas
and so would be a waste. I figured some butyl tape would do nicely to seal the extrusion against the nonskid.
The whole bolt-rope method of attachment is interesting as well, I have a boom tent for my cockpit
that is literally made out of a length of boom for a strong back that has a folded-in-half-with-a-piece-of-rope-in-the-middle canvas
tarp threaded into the groove on the boom that works quite nicely.
I have to get a chunk of the staple track and play around with it as I have a couple thoughts for a way to do make the whole thing with very little to no sewing. Also, any type of friction fit as opposed to the staples would be favorable from the standpoint of eliminating the dissimilar metals issue, so will have to see.