Hi folks -
As an update, I wanted to give you the angle on what we call tilting.
I've only had two customers that have experienced moire by using the fabric in the typical non-tilted fashion. Both were using LCD projectors, which are more prone to artifacting with AT fabric due to their lower fill ratios and more defined pixel structures. By typical non-tilted fashion, I mean constructing the screen with the image cut from the material roll with the threads oriented as such (for scale, this is zoomed in, the piece measures appx 1.6" wide):
The fix for using this fabric with non-Panasonic LCD projectors is to construct the screen by cutting the material at an angle with respect to the roll. While there are a few other perfect angles, the one that results in the least waste is 15 degrees. The screen surface would then look like this:
I wanted to post these two pics and try to explain first what is meant by tilting the fabric. You aren't tilting the SCREEN in any way, or cutting anything other than the perfect rectangle for your image. It's just tilting the fixturing used to cut the screen. It's more difficult and wastey, but we went back to some projectors that didn't moire and determined that it still improved the image quality. Even though moire didn't exist (DLPs and Panasonic's smooth screen are the most immune artifacting), angling the material's thread directions reduced pixel structure, screen door effect, and smoothed out the image overall.
Having had to replace the unacceptable NON-tilted screens, we then only have positive reasons for tilting ALL screens. While it's an incremental cost increase, it's an incremental improvement for the quality of all images and neither consumers nor friendly manufacturers enjoy replacing product. Win, win, and win.
Happy holiday week!