Jackhammer hold by both hands. How?

[Philippe Hurbain]

However, I still have problems with the rotation of the parts.

The main trick is the "o" key. Select the part you want to rotate, press "o". LDCad then switches to local axis, and allow to rotate parts around its own coordinates system. Select nothing and "o" again to return to normal operation.

I had tried the snap function for the parts, but somehow at the last part there was a little gap or the angle was wrong. Something was always missing

Problem here is that you would need have multi snapping, you need to adjust many rotations (arm, hand, jackhammer) to make it work. It's not just snapping...