Anton_S, thank you so much. Thats the key.
I wonder why in any tutorial teach that !!!!

Thanks again.

Hi everyone, I am new in SketchyPhysics.

I don`t know if this is the best forum to ask help for my question.
Sorry if not, and please tell me where is the best place.

This is my question:

I installed SketchyPhysics in Sketchup 8 (Windows 32 bits).
I follow the tutorials but at the first test I found an error that has me stopped:
I create a box and another copy over that.
Mark "static" to the bottom box.
Put a hinge in one border (left or right) in the middle edge of both boxes.
Joint the hinge with the bottom box.
Group the upper box with the hinge.
And when I click in "play", the upper box fall down rotating from the hinge and fall through the bottom box.
I tried to do a lot of times and always the same result.
Is like that when I assign the "parent" to the hinge to rotate, that parent box become NO solid.
Help please. Thanks.

Hi everyone, I am new in SketchyPhysics.
I installed SketchyPhysics in Sketchup 8 (Windows 32 bits).
I follow the tutorials but at the first test I found an error that has me stopped:
I create a box and another copy over that.
Mark "static" to the bottom box.
Put a hinge in one border (left or right) in the middle edge of both boxes.
Joint the hinge with the bottom box.
Group the upper box with the hinge.
And when I click in "play", the upper box fall down rotating from the hinge and fall through the bottom box.
I tried to do a lot of times and always the same result.
Is like that when I assign the "parent" to the hinge to rotate, that parent box become NO solid.
Help please. Thanks.