Switch blade thicknesses and where each is used
Blades come in one length you cut to size, in light (.008"), medium (.012") and heavy (.016") gauge. Heavy blades go on flipper and EOS switches, medium on relays, rollovers and most other switches, and light only on low-tension switches. Keep some gray fish paper and nylon switch lifters too.
Systems
Related tips
Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part One, Clay Harrell (pinrepair.com)