I was using metal bath bomb molds, which I like, and some milky way molds, with mixed results. So I bit the bullet and bought a 3D printed mold that you press. it comes in 3 pieces and costs between $11-$20 so They cost a bit more but I was willing to risk it. I got the donut-shaped one. Worked like a charm! Had much less crumbling and they were pretty easy to unmold. I was able to glaze this one the next day.
I went back and ordered a duck butt-shaped one.
I went back and ordered a duck butt-shaped one.