There are also vertical machines, of which I have worked on. The moving
side of the horizontal machine becomes the top side of the vertical machine.
Vertical machines are a lot easier to work with when you have to do insert
stuff as the bottom half of the mold doesn't move and can have parts put on
it to be molded into the plastic with no fear of the part falling out and
being crushed into the mold as the mold closes.

--
Bob May
Losing weight is easy! If you ever want to lose weight, eat and drink less.
Works every time it is tried!