Hi.

I tried to create small domino simulation, but result is horrible.

It seems that collision is not correctly calculated. Then I increased substeps, the result get better but still sliding a bit. I increased substeps around 200 and finally the result is satisfactory.


I created two files, one with 1cm/unit and one with physically small object. When I played around with Collision Padding in physically small version of the file, the objects explodes for some reason. So I had to set Collision Padding to 0.

So here are my questions.
1. When you create small scale simulation, is it better to change unit scale or make actually small objects??
2. Is increasing substeps like crazy only solution for small scale simulation? Is there any other approach?

Greetings.
You can scale up your SIM and when it accomplish just append a transform node and scale it down.

well, simply scaling the simulation won't work because larger sim moves slow and smaller sim moves quick.

So increase gravity force in order to get desirable result.
Mainly bullet has problems with small scales and you have to scale up your scene.