I love my Bally Safe Cracker pinball machine ! It's a great game, with special and different gameplay.
The looks can be a bit improved though, some parts can use a little detail.
Safe Cracker Bank Mod
This 3D printed plastic covers the metal ramp in the back left. You can order it below directly from Shapeways.
I'm a fan of flasher rings, or flasher covers. These 3D printed parts cover the ugly tabs where the flasher connects into the plastic ramp.
The design is based on the safe dial that's shown on the artwork.