Quote Originally Posted by niina View Post
Also with this particular column it is actually impossible to fly out because the column is not open from the top. Only danger is for the bellows.
Glad you have sorted it out - the 504 is a very nice enlarger!

BTW, even though the carrier stage cannot actually launch out of the column, it is still bad for it to slam into the top of the column (or any part of your body that happens to be in the way!). When you don't have a head on the enlarger, it is best to store the 504 with the carrier stage right up at the top so that there won't be an accident if someone loosens a knob...