pinball cut in half

Added a picture to http://www.flippers.be/basics/101-pinballs.html
of a pinball cut in the middle. Cool to see the inside, I always thought they were of the same consistency, looks like they are two different grades of steel around eachother ?

More custom pinball machines

Interview online with Ben Heck of Benheck.com who's making a custom pinball machine.

Also interviewed Jeri Ellsworth about her custom pinball machine.

Can't wait to see the final results of both !