MikeB, Thank you for the comment. The adjustment is kind of tricky. I just quickly draw a picture.
The threaded shafts attached to the cutting iron have a stopper and the brass screws have a non threaded hole only a little bit bigger than the shaft. Then, the cutting iron is staying in a position by pinching the brass screw with the brass nut from the top and the stopper.
Does it make sense? I mean, my explanation is usually more complicated than what it is....
