Engineering Change Control: 9 Essential Checks for CNC Parts
Engineering change control for CNC parts: 9 essential checks for drawing revisions, work in progress, supplier approval, inspection and safe production release.
Top 10 CNC Machining Companies in China (2026): A Buyer’s Shortlist
Ten Chinese CNC machining suppliers compared on certifications, tolerance, facility and lead time – every figure taken from their own websites, with the method and our own conflict of interest stated up front.
How 5-Axis Machining Works: 3, 4 and 5-Axis Compared
Adding rotary axes to a milling machine does not make it more accurate. It makes it possible to hold accuracy across features that would otherwise need three or four separate setups, and that is a different claim. This page explains how 5-axis machining works: what actually changes as you move from 3-axis to 4-axis to […]
Wire EDM: How It Works and What It Can Hold
Wire EDM cuts by eroding metal with controlled electrical sparks rather than by pushing a tool through it. Because there is no cutting force, hardness stops being a constraint and geometry that would snap an end mill becomes routine. It is also slow, leaves a modified surface layer, and cannot cut anything that does not […]
Inspection Standards for Machined Parts from China
Low unit price stopped being enough to win a machining order some years ago. What decides it now is whether the supplier can produce evidence: a certificate whose scope actually covers your process, a traceable material chain, calibrated measurement, and inspection records that survive an audit. This page sets out the inspection standards and what […]
What Drives the Price of CNC Lathe Work
A turning quote is a stack of decisions, and most of them were made on your drawing rather than on the shop floor. This guide covers how CNC lathe services are actually priced, which specification choices move the number, where turning is the wrong process entirely, and what to ask a supplier before you put […]
How to Audit a 5-Axis Machining Supplier
Two shops machine the same drawing on comparable machines, and one ships parts that hold spec while the other keeps drifting. The gap is rarely the hardware. It is how the run is planned, fixtured, measured and documented. A 5-axis machining audit of your CNC machining supplier replaces opinion with evidence you can ask for […]
Wire EDM vs Sinker EDM: Trade-Offs and Limits
Some features cannot be produced with a rotating tool, however good the tool is. A hardened insert with a slot narrower than any cutter that would survive it. A die with a sharp internal corner. A profile in carbide that has already been heat treated. Those are wire EDM vs sinker EDM jobs. That is […]
How CNC Milled Parts Are Made: Step by Step
A CNC milled part starts as a set of numbers on a screen and has to end up as metal you can bolt, seal or certify. Most of what goes wrong in that handoff is decided before anyone switches a machine on: an ambiguous datum, a tolerance nobody needed, a material chosen for a property […]
Fiber vs CO2 Laser Cutting for Sheet Metal
The way a sheet metal part gets cut decides most of what happens to it afterwards: the edge condition your finisher inherits, the hole positions your assembly line lives with, and the scrap you quietly pay for on every sheet. Choose badly between fiber vs CO2 laser cutting and you inherit deburring labor, fit-up problems […]