I don't have snaps to share but I did borrow a friends Park Tool fork straightener recently and worked on a bent fork from a Raleigh 3 speed. I'm not claiming that the fork is safe now but I learned a lot from the experience. Pretty well designed tool and it straightened that fork quite well. I can see how you can bend each blade back to normal without stressing the brazed fork crown joints.

Who knows if I'll ever try this on a rider though.