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Guides for people
who make things.
Practical guides so you can decide materials, processes, and DFM without becoming a factory expert.
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Materials
POM vs nylon, aluminium vs steel, and what each choice does to wear, noise, tolerance, and unit cost.
Process
When CNC beats injection molding, what tooling really costs, and how to switch without restarting.
Design for manufacturing
Draft angles, wall thickness, tolerance stack-up — the checks that keep a first article from failing.
Tooling Ownership: What to Lock In Before You Pay
Injection molds outlive any production run. Decide who pays, who owns, and who can move the tool before the first tooling invoice — in writing.
Multi-Material Products: One Partner or Three?
Plastic, metal, and glass in one product often means three vendors and three failure points. One team can own the spec instead of the email chain.
What to Send When You Start a Manufacturing Project
A sample, CAD file, or clear photos are usually enough for a useful first review. Here is what helps an engineer answer faster — and what you do not need yet.
Why POM Fits Quiet, Wear-Resistant Gears
POM is not the only gear material, but its friction, stability, and wear behavior often make it a strong starting point for precision plastic gears.
Designing for Manufacturing: 5 Decisions Upfront
Material selection comes last, not first. Decide function, environment, volume, tolerance, and budget before asking what a part should be made of.
CNC vs Injection Molding: Which Fits Your Part
The two most common processes for custom parts are not interchangeable. Here's how to decide which one fits your project.
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