I recently picked up a new lens board. I knew it was plastic, but I didn't know it was 3D printed plastic. Still, it seemed firm and fit very well. Yesterday, with a lens attached, it slipped out of my hand. It only fell an inch -- maybe two -- but it happened to make impact on one of the four corners of the lens board. An inch of the corner snapped right off. I think formed plastic would have been more flexible. The 3D board is very brittle -- too brittle.
FYI
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