They make such nifty little flasks.
Great control of material use=economic
Good integrity of the mould=less remake
The contsiners are cheap.
On a small scale, you're a rock star.
Now I work where scale seems to dictate hydrocolloid.
The nicest thing I can say is it tends toward temperamental, and I avoid emotional relationships with materials, unless they shut up and make me happy.
I miss the zip locks.