Guest
I am designing a small engine and when I attempt to make an assembly I have a hard time constraining the parts how I want them. For example when I attempt to attach the cylinder head to the crank case I am not able to constrain it so it won't rotate. I am only able to attach it at one of the screw holes or the center axis of the head. When constrained like this the head will rotate and spin around the axis that I constrained it on. If I try to constrain it by attaching its bottom plane to the top of the crank case it simply slides along the plane, not staying fixed. When I try to use a conbination of constraints I get an error that they interfere with eachother. Any suggestions would be much appreciated.
