Moving from a working 3D-printed prototype enclosure to a small-batch injection-molded one costs $3,000-$10,000 in tooling and requires redesigning the entire part for draft angles, wall thickness, and gate location

A hobbyist or micro-hardware-startup can 3D-print a functional enclosure in PLA or PETG for $2-5 in material. It fits their PCB, has mounting bosses, snap-fit clips, and looks good enough for a demo. But when they want to produce 100-500 units for a Kickstarter or initial sales run, 3D printing at that volume costs $5-15 per enclosure (even with a farm of printers) and produces parts with visible layer lines, inconsistent tolerances, and poor UV/heat resistance. The obvious next step is injection molding, but the minimum tooling cost is $3,000-$10,000 for a simple two-part mold, and the 3D-printed design cannot be directly molded: it needs draft angles on every vertical wall (1-3 degrees), uniform wall thickness (the 3D print had variable walls), repositioned mounting features to work with mold ejection, and a gate location that doesn't leave a visible mark. This redesign is a completely different skill set from the original enclosure design. The hobbyist who learned Fusion 360 or FreeCAD well enough to model a 3D-printable box now needs to understand injection molding DFM (Design for Manufacturability) rules that took industrial designers years to learn. Hiring a DFM consultant costs $500-$2,000. The total cost to go from 'working 3D-printed prototype' to 'first injection-molded part' is $5,000-$15,000 and 4-8 weeks — for a part that the maker already 'designed.' Many Kickstarter hardware projects fail or massively delay at exactly this transition because the creators didn't budget for it. This gap persists because 3D printing and injection molding have fundamentally different design constraints, and no CAD tool bridges them automatically. Fusion 360 has basic draft analysis, but it doesn't suggest how to redesign features for moldability. There's no tool that takes a 3D-printable STL and outputs a mold-ready STEP with proper draft, uniform walls, and suggested parting lines. The maker ecosystem treats '3D printing' and 'injection molding' as separate worlds with separate communities, separate knowledge bases, and separate toolchains, leaving the transition as an undocumented chasm that each hardware creator must cross alone.