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"Subtractive machining" is a process by which a metal fabrication shop changes a quantity of metal into a desired form by removing portions. In most cases, this shaping takes place using either a milling machine or a CNC lathe. If you're unfamiliar with these types of equipment, C & C Machine Inc in La Crosse, WI, explains below how the two machines work and the best uses for each. 

Lathe Machines

The primary difference between a lathe and a milling machine is that on a lathe, the machining head does not spin. Instead, the part rotates on its axis while a stationary cutting tool shapes the metal. This limits a lathe's usefulness to cylindrical, symmetrical parts, but it provides fast, repeatable results at an affordable price. It is ideal for drilling, boring, threading, grooving, and other symmetrical shaping processes. However, for more intricate and customized shaping, a milling machine is required.

Milling Machines

Milling machineOn a milling machine, the part itself remains stationary while the cutting tool rotates fast enough to cut and shape the material. This permits the cutting head to address and shape the part from any direction, and allows for more complex, non-symmetrical results. There are hundreds of specialty cutting tools that let you achieve almost any shape needed as long as you have the necessary clearance. Although a milling machine can make any cuts a lathe can make, it cannot do so with the same speed and efficiency.

Whether you need the service of a milling machine or a CNC lathe, an experienced metal fabrication shop should be able to help. Contact C & C Machine Inc in La Crosse, WI, to discuss your project. They offer precision welding and machining at an affordable rate. Visit their website to view a map and business hours or call (608) 784-4427 to schedule a consultation.

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