It's called a 'gallery wrap' and it's quite simple to do. I've done hundreds of them and pretty much do them in my sleep. The first one you do will be a bit of an education but unless you're a complete maladroit you won't screw it up There are countless you tube videos explaining the procedure. Many of them hawking some system to special tool, pay no heed to these, all you need are canvas pliers, available at any art supply hobby store, and a good stapler. Preferably an air stapler but there are electric versions. If you use a hand stapler you'll probably require some sort of physical therapy after doing one or two wraps. There's a lot of staples.
You'll also need a set of stretcher bars upon which to wrap the print. The stretchers commercially available are usually 3/4" thick. There are thicker specimens but if the standard 3/4" bars won't do it's easy and usually cheaper to make your own from brick mold available at any lumber yard. Opt for solid PVC brick mold in lieu of wood if you can. The PVC is dead nuts straight and can be glued with standard PVC cement rendering an almost instantaneous bond.
I have ordered frames from these people
ImageWorks Supply : Wraptek, Canvas Frames, Stretcher Bars, Canvas Rolls, French Canvas
Very very good product! Super easy to assemble.
I used to build frames myself from scratch until some of these started to warp from ac/temp/humidity.
I love how they make corner braces and center braces also. Makes the frame super strong
Expensive overkill. Unless you're stretching some huge wall-size print you don't need corner braces, center bars, the stick back corners, and none of the clever fasteners. None of it.
Just whack off 4 pieces of whatever raw stock you choose to use at 45 degrees. Accurately, making 2 rails of exactly the same length and two stiles of exactly the same length [those would be the 2 horizontal and 2 vertical pieces] . Take a rail and a stile, put a bit of glue on the cut, position them on a flat surface using a framing square up against the inside to make sure it's square, the drop three staples across the 45 degree seam so that they span the seam. Turn it over and do three spanning staples on the other side. add the next rail or stile in exactly the same way, moving the framing square to the outside if the frame is too small on the inside.. Add the last piece and staple both its seams.
The result is more than sufficiently sturdy for stretching canvas. If you did good 45 degree cuts and you kept it square during assembly you're good to go.
I hate to say it but the only place to get stretched wood for .30 cent - 80 cent a piece is overseas. Im getting started myself with canvas wraps and I haven't found a place in the states that can get close to overseas pricing.
Why?
I couldn't answer that. I mean its wood. Should be able to provide the same quality here in the states for even double the price of overseas and I\d be happy and purchasing from the states but the price difference is night and day.