We’ve all heard of whalebone corsets, yes?
This is a misnomer. Moby Dick et al were hunted for their cartilage, not their bones.
I have never made a corset/stay before so have never had to use any kind of slim, flexible, robust bodice shaper.
Today we use plastic. Go figure. Some thrifty sewers even use zip ties…Note to Self #cheap.
I’ve gone for 5 metres of plastic. A further round of research may reveal a better, more friendly, modern alternative to baleen. Or plastic. Yes?