by eMachineShop | Sep 18, 2026 | Blog, CNC, Injection Molding
The process that’s right for one prototype is often the wrong process for 5,000 units — and the reverse is just as true. Knowing when to switch is a cost decision, not a maturity milestone. Quick summary: CNC machining and 3D printing dominate prototyping because they...
by James Wright | Sep 15, 2026 | CNC, Compliance & Quality
Every individual part can measure perfectly within its own tolerance and the assembly still won’t go together — because tolerance stack-up isn’t about whether any one part is correct, it’s about what happens when several correct parts’...
by James Wright | Sep 9, 2026 | CNC, Compliance & Quality
ITAR controls who is allowed to access certain defense-related technical data and hardware. CMMC governs how that data has to be protected once you have access to it. They’re related, but they answer different questions. Quick summary: ITAR (International Traffic in...
by eMachineShop | Sep 2, 2026 | Blog, CNC
A CNC end mill is round. It cannot cut a perfectly square internal corner — physically impossible with a rotating cutting tool. Every internal corner on a machined part carries a radius equal to at least the tool’s radius. Quick summary: Internal corners on...
by James Wright | Aug 28, 2026 | CNC, Sheet Metal Fabrication
If your part is flat and 2D, laser or waterjet is often faster and cheaper than CNC. If it needs 3D features — pockets, threaded holes, contoured surfaces — CNC is usually the only option of the three. Quick summary: Laser cutting is fastest and cheapest for thin...
by James Wright | Aug 24, 2026 | Blog, CNC, Materials, Surface Finishing
A $40 bracket and a $400 bracket can look nearly identical on a drawing. The difference almost never comes down to greed or an inflated shop rate — it comes down to ten specific variables, and most of them are decisions the designer made without realizing they had a...
