Question 1

Do I need CAD software to design a soap bar?

Accepted Answer

No. The bar is built from a few numbers: width, depth, height, how round the corners and edges are, and how much the sides slope. Everything runs in your browser and you download a printable STL.

Question 2

Is this the soap or the mold?

Accepted Answer

It is the master, the solid positive you cast from. You print it, take a silicone mold off it, then pour soap into that mold. The Use in a mold button hands the shape straight to a mold generator.

Question 3

Why does the draft setting matter for soap?

Accepted Answer

A bar with vertical sides grips the mold. Soft silicone will let it go if you fight it, but a rigid mold will not let go at all. Two to three degrees of slope is usually the difference between peeling a bar out and tearing the mold.

Question 4

How much soap will one bar take?

Accepted Answer

The designer shows the volume of the shape as you change it and converts it to a rough weight of soap base, so you can size a batch before printing anything.

Parametric Soap Bar Designer