If your PCB works but the product still has no body, this is the step that gets you to something a manufacturer can actually price. I design the enclosure around your existing electronics — the housing, the internal architecture, how the board and connectors sit inside it, and how it gets made at volume. Not a render of an idea. A design with wall thickness, draft, an assembly method, and a process behind it. I check the things that get expensive later: clearance conflicts, undercut faces that force side actions in the tool, wall sections that sink or warp, heat with nowhere to go. Catching those on a model costs nothing. Catching them after steel is cut costs a tool. Every tier ends at a usable point — a decided direction, a CAD file, or a package a factory can quote from. What I don't do: PCB layout, circuit design, or firmware. Mold and tooling engineering is executed by a tooling specialist. I write the spec that engineer works from and stay in the loop through tool release. Bring me a board outline, component datasheets, and a rough sense of volume, and I'll tell you what's realistic before you commit.