Ok in the current sp2 beta there seems to be some jointing ritual that you have to follow carefully for a succesful setup. Could this maybe added to the official docs, or fixed in a future version so that it's less sensitive? I'm really having trouble with a setup that I'm trying to get.

The current method is kind of counter intuitive. The joints seem to be very sensitive.

Adding a joint to a group then attaching someting to that joint.
adding an object attached to a joint to a group.
Adding an object to a group that is jointed.
Removing an object from a group that is jointed.
Copying jointed groups.
...

All of these actions behave negativly on the overall setup in some way. Please please fix this.

**Edit:**Let me add a few other things .

Is it normal that objects are stretchy when jointed. I mean you can pull them quit far from their jointed place or even "bend" them in the non rotating axes.

Also a "disconnect all joints" button would be helpfull.

I'm sorry if this seems bothersome. but I'm making a unique project and it tests sp to the limit.

Oke I'm not the type of guy who makes 3 threads in such a short notice, but this also has to be adressed .

Basiclly what i did was make a hinge part of a group and then attach another group (rod+ball) to the hinge. What this results in is non collidsing groups. I have included a video to show this...

and the file.

I btw use the latest sp2 beta.

Spinny.skp

Lets say I have a sphere and a box. What I would like to do is for the sphere to ignore the box and vice versa but interact with everything else as normal. Basiclly I have hull right now that intersects quiet a complex group. I want this hull to ignore this entire group but interact with the rest of the world normally. Is this possible?

SketchyPhysics is an awesome plugin but it can be made even better. Here are a few of my suggestions, some might have been suggested already though.

1)Object properties. I think this was also refered as material properties (mass, friction, elasticity)

2)A way to auto position and orientate an object so it's perfectly on a slider, without needing to position and rotate it yourself. This idea popped up while I was trying to center the object myself. A nice addition to this is that this would place the object exactly on the center of a slider.

3)Adding some type of native rope physics?

That's all I have. I really wish some will be considered in this great plugin. And all I can add is to keep up the awesome work.