Need help.. they just intersect each other by tiny bit...

[ykchanhk]

Hi all,

I am a new user to sketchyphysics and just encountered a strange situation when doing a simple gravity simulation.
Basically I am doing a engineering project, studying if the prism-ish bricks i created can be stacked up without mortar.

So the problem is, when i run the engine, each layer of brick 'sinks' a a bit, and intersect with the bricks underneath just by a tiny little bit.
The difference in height increases when i have quite a few layer of bricks

Each of these bricks are purely convex shape, so i set them as convexhull. When i run in debug mode, the convex bricks seem to be faithfully represented, i just dont know why they intersect each other..

Any help?? THANKS alot in advance.

kee