for an alternative view, I always frame my airbrushed acrylic paintings under glass, and I never use plexiglass.
Several years ago, I was told about Plexiglass by a fellow artist at a national show, and I used it to frame several paintings.
My work is exhibited across the country, and it travels with me, by car.
Plexiglass scratches very easily, and yes--saying it attracts dust is an understatement. Glass is easier to clean (and glass is cheaper) than Plexi, and doesn't get as dusty, and glass does not scratch. Pieces framed under glass look much better at shows than those framed under Plexi.
The choice is between dusty and scratched Plexiglass, or the occasional broken pane of clean, clear glass.
I'll take broken glass any day.
I also never use 'non-glare' glass--which looks cloudy to me, and makes my work look 'foggy'.
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