A prototype assembly is rarely best made by a single process. The housing may print quickly in resin, the shaft needs the strength and precision of machined metal, and the threaded joints need inserts that neither process provides alone. Hybrid prototypes combine printed parts, machined metal, and standard hardware, and they succeed when each part

Semiconductor tooling parts fail in ways that ordinary machined parts do not: a particle from a worn edge can contaminate a wafer, an outgassing polymer can poison a process chamber, and a dimension that drifts by microns can misalign a gas panel or a wafer handler. Buyers of these components are not looking for the

A machined stainless fitting looks perfect when it arrives and pits within a season in a saltwater environment. The drawing said “316 stainless,” the certificate agreed, and the part still failed — because the alloy was right and the design was wrong: a crevice trapped saltwater, a dissimilar-metal contact drove galvanic corrosion, and the finish

The first metal 3D printed part many teams make is a copy of a machined design, and it costs twice as much as machining while adding nothing. Metal printing earns its price only when the design uses the process: internal cooling channels that no tool can reach, lattice that saves weight where it carries no

Prototypes support validation, not compliance. In medical device development, vacuum casting serves the appearance, fit, and bench-testing stages—showing the device's look and behavior before the production and regulatory path. The cast prototype is explicitly a validation tool, not a final-compliance part, and the material and handling choices follow that role. This guide defines where casting

Aluminum extrusion forms a long aluminum profile with a constant cross-section by pushing a heated billet through a shaped die. It is commonly considered for rails, frames, heat-sink profiles, housings, and other parts whose cross-section stays consistent along their length. This guide explains the process, the design constraints that affect feasibility, and the questions to

The die decides what is possible. An extrusion profile is a cross-section that must flow through a die, and the design rules follow from that physics: walls uniform, section balanced, and enclosed cavities avoided unless the die can support them. Design within the rules and the profile extrudes reliably; ignore them and the die struggles,

Two alloys, two personalities. 6061 and 6063 dominate custom aluminum extrusion, and the choice between them is the classic trade of strength against surface. 6061 brings higher strength for structural profiles; 6063 brings better surface and anodizing behavior for architectural and appearance parts. The right choice depends on the section, the temper, and the finish—not

Extrusion finish affects product perception—and long profiles make finishing a special problem. A six-meter profile must carry the same color, texture, and coating quality end to end, which demands hanging, handling, and process control that small parts never need. The extrusion-specific challenge is uniformity across the length. This guide covers the finish options and the

Two routes skip injection tooling, and the choice between them depends on the batch. 3D printing produces parts directly from files—fast, no tooling, and ideal for single parts. Vacuum casting reproduces parts from a silicone mold—slower to set up, but with molded-like surfaces, material range, and per-part economics that improve with quantity. The decision is