You could try the test_trilist that goes with it? Or see the Wiki pages on info how to build the tricollider. Erwin ----- Original Message ----- From: "Ivan Bolcina" <ivan.bolcina@volja.net> To: <ode@q12.org> Sent: Tuesday, October 01, 2002 20:27 Subject: [ODE] Usage of triangle collider Can anybody give me an example how to use triangle collider. Currently I am using built-in collider on boxes. bye, ivan