How to make a projection screen that's also a painting

Step 4 Streeeetch

Once you're satisfied with the initial cross you work yourself, one quadrant at the time, out towards a corner. Alternate between sides to get the best possible result and fold it over when you get to the corner. A word of warning: Even though I restretched the whole thing probably four or five times it still had tiny creasing/bubbles along the frame (especially the morning after), but only if the light was right and I looked at it from a 170 degree angle. I'm deeply anal about these things but in the end I decided that it was good enough and that I probably wouldn't watch movies from that angle anyway...

Then it's time to do the other side. Take care not to get the side that's done dirty in the process since it will be problematic to clean it. The material I used for this is called Barracuda which is a plastic tarp similar to the stuff they use for printing advertising banners on. It's kindof thick, a couple of millimeters at least, so it's much harder to stretch than the shades and you should probably get a mate to help you out. Aside from that the process is pretty much the same. Remember to start out by stripping the excess fabric left from the other side using sharp scissors though (box cutters are too imprecise for a good result).