SOAP-A | Drafted form with independent section checks

Good design care starts with a clear direction, even for a simple form. THE TASK Create an editable drafted form and make the geometry behind its release direction easy to inspect. This original SOAP-A study uses a 90 x 55 x 25 mm envelope, R12 top corners and 3 degrees of geometric side draft. THE REASONING Every horizontal section follows the same inward-offset equation. I checked five sections of the reimported STEP against that independent formula, compared the solid volume with its exact integral, and checked the STL for scale, paired edges, winding and collapsed facets. A nonnominal parameter variant checks that the construction remains consistent when dimensions change. THE PROCESS CARE Nested profiles support extraction in +Z from a corresponding open female cavity. The review drawing makes the direction, reference planes, dimensions and assumptions visible. The next tooling decisions depend on the actual soap/material behavior, shrinkage, texture, edge finish, release force and press/die interfaces. These are carried into the process review instead of hidden behind a finished-looking render. The design package contains editable AI-assisted Python CAD (build123d/OpenCascade), STEP/STL, a dimensioned review sheet and check results. Images show the actual original CAD geometry and its review drawing. Self-initiated, unbuilt form study for geometry review. It is not a tested mold or production tooling release. Arya Singh | Independent Designer | Innovative Solutions Contractor