I'm trying to simulate the coins but I can't get them to stop bouncing which means they won't settle when I have a group of them. I've tried changing the friction and bounciness of both the coins and the collider but regardless of whether they are 0 or 1 they will keep bouncing around. Is there something I'm missing here?
I would use Planes set to Box as 'floor' and 'sides' and use a Convex Hull for the coin. In both cases leave the Collision Margin unchecked:
That should give a more stable result.
(You have your Margin set really high, which is part of the problem, but simply reducing that won't solve it.)
I hope this helps you, I am no expert on Blender Physics;)
I found a setting in the Rigid Body section for the coins where you can check off Deactivation and set Velocity Linear and Angular to 2.6-3.0. Also setting the coin Collisions to Convex Hull and Deform worked for me. This info was not in the video tutorial. This worked using the box with the top face removed as in the tutorial
I set the coin weight to 0.007 kg which is slightly heavier than a US quarter. Maybe should go higher as gold has a high density. The passive container should be set to shape: mesh, source: base. Then the deactivation is also important. I went with 10 m/s. Those are the velocities at which blender says, "hey. the speed has dropped below this number so I am just gonna stop simulating." I went as low as 5 m/s on those deactivation numbers and they didn't stop moving fast enough for my taste. It seems to ME, and this was just through my testing, that the most important thing is the source: base because as soon as I changed that everything started working. I DID subdivide the mesh on the container at a level of 5 but I don't know if that contributed to my success or not.
Sorry. As I will keep mentioning over and over, I have an m.s. in physics. LOL. And for me, it needs to be right and I need to understand why.
Oh. And coins as cylinders, too. I don't know if that had an effect, but it makes sense to do it that way. To me anyway.