As others have stated if you haven't been you should go. I had attended
many Expos in the past, skipping the tour as I used to live in the area,
selectively attending the show on one day.
Having moved away I decided to take the tour with last years Expo. I
was amazed at the production technique used to construct Stern pinball
machines.
Stern utilizes construction of the wiring harnesses much in the same way
as complex wiring harnesses were built in the 1930's - by hand. Our
tour guide was a factory engineer, maybe chief engineer and could answer
a multitude of questions. You will see the key to production, the
dimpler machine, the only surviving example that dates back, I believe
to Alvin Gottlieb production.
You will see how the wiring is tested before installation. You will see
playfield assembly as it happens. They had a couple of games in
production or partial production at last years tour time.
It is a very interesting tour. You should go.
--
Barry