I had this idea that I would make a projection screen that doubled as a painting when you flip it over. I liked the thought that it would look like I didn't have a TV at all while at the same time getting a cool piece of art that I actually made myself. It turned out to be a lot of work but I'm very satisfied with the result even though a lot of things didn't turn out as I thought (some better, some worse).
Anyways, I thought I'd collect what I learned and publish it so that people can go ahead and make even cooler screen+painting combos.
Step 1: Get the stuff
First thing to do is to build the frame. I went to the lumber yard and got regular unfinished lumber (40mm x 30mm) to make the inner frame. I also got some finished wood to use as the outer frame. You also need some L brackets, wood screws, a staple gun and a miter box (if possible though, use one of those miter saws that are attached for better precision).
The picture is missing quite a few pieces, but you probably know what they look like anyway.
Step 2: Make the inner frame
Now it's time to make the inner frame. Just saw the unfinished lumber to make a rectangle of 16x9 proportions (I made miter joints but it's probably easier and better to make regular joints since these won't show anyway). To ensure the structural integrity of the thing I also put a cross in the middle.