I’ve been printing and framing (and stretching) my own prints for 20 years. As has been mentioned, without a mat, there is a very real risk of the print sticking to the glass/plexi. An alternative to to create a “floating” mount. Basically you use plastic spacers in the corners of the frame that will keep the print from contacting the glass. You still have the look and feel you want, but you don’t risk the print sticking to the glass. Many, many years ago, I used to use “frameless” frames that used clips and a backing board. I used these for tear sheets and prints hanging in my old studio. Years later, I came across the frames. A handful of both tears and prints (remember these were chemical prints, not inkjet or dye-sub). Some stuck to the glass, some did not. So it’s a crap shoot, depending upon what you want to do/risk. Sun light and humidity will exacerbate the possibility of sticking.
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