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.

hi you can download EXCEL tutorial here. http://sketchucation.com/forums/viewtopic.php?f=61%26amp;t=46796 explaination for your problem you need to works with parts group take a look on the next GIF Chri CHAIN.skp [image: Wuic_chain.gif] example 2.skp [image: yCRv_EXAMPLE02.gif]

There are already some answers to this question in your other topic, you shouldn't double post this. http://sketchucation.com/forums/viewtopic.php?f=61%26amp;t=64038