Can the machine detect three identical plates stuck together? Just curious.
My most hated parts to separate are a flat dot on top of a regular dot. Second runner-up is the 1x1 plate on top of a dot, which is common in the Minecraft sets. I'd pay for a machine just to separate these for me!
Depending on the viewing angle: yes. If the part should land particularly unfavorably on the belt then there is a small chance that it would not be seen.
My most hated parts to separate are a flat dot on top of a regular dot. Second runner-up is the 1x1 plate on top of a dot, which is common in the Minecraft sets. I'd pay for a machine just to separate these for me!