Here's a video of my guys rolling cups. One guy can roll two cups every 3 minutes. They are taking their time and hitting 4 cups every 4 minutes. I think they could speed up to a 3 minute cycle time if they really tried. Do that math per day... Remember nobody ever said you only had to lay one piece of film on the tank at a time! We had 200 of these to do and ironed out a lot of process techniques. First really "large" run that we've had. The cup thing never really took off around us, but I think we have a system that can be pretty profitable even for smaller orders for local companies. I'm going to knock on some doors next year with free samples. If we could get a few orders like this before Christmas it would be a nice way to end the year!
We use Mason Jar corks from WidgetCo with eyebolts through them. Works well.