I will do part 3 tomorrow man I beat....I have worked out (I know jumping ahead...sigh) that tweaking the bounciness on the plane AND the glass stops the rings from flying out too fast. I WILL watch part 3 for the difference between static and dynamic friction....so Im not jumping ahead LOL (naughty man I am). I am currently tipping over a cup (its all I have in my prison room)...with coins in it to study the way they move....

cheers bullet