Some thin parts can be made without making both a punch & mating die. This small block of rubber has been used to form - pierce & blank all sorts over the past 35+ years.
https://youtu.be/dOAVcJ1CCmY?si=swp14X8Wlgm4cN6p
https://youtu.be/biwzei_pt5c?si=u0SAYIz11JHvVE5B
