Buying a CNC Router? Do Your Homework!

Before buying a CNC Router, it’s important that you do your homework. Once you understand the most common terms related to this device, you will be able to understand how they can work for you.

  • Motor – the servo, stepper, closed loop stepper drives provide the motion. The motors   come in many sizes and are designated as a NEMA XX size. NEMA 23 and 34.
  • Torque – the motor torque is rated in ounce inches, like foot pounds on car engines, only smaller units for smaller motors. The higher the “oz in” the more power the motor has. Rack and pinion, ballscrew, gearbox, belt drive all convert rotary motion into linear motion.
  • Spindle – spins the bit that cuts your material.
  • Materials – welded steel, bolted steel, solid aluminum and aluminum extrusion provide the framework for the machine.
  • Rollers and rails – rollers, round linear rails, and profiled linear rails all provide the smooth motion surface that high quality CNC cutting requires.
  • Software – this provides the motion control.  There are “branded” proprietary versions that are made to operate specific makes of machine. Other software solutions can operate multiple brands. Some require a hardware purchase, while others do not. Some run industry standard Gcode. Some software is easier to use than others. A good software solution is stable and does not create problems for users, whether you are a CNC router novice or a veteran.
  • Connectability – new computers no longer have parallel ports. USB is much simpler to find cables and ports for, but do have low data limits. USB can be problematic as the Windows operation system seems to not care that there is a CNC connection, especially when it is time to “check on” the ink in a printer or other USB device. The best systems include hardware that allows dedicating computer resources to CNC control. The most popular systems are those that are less expensive and can also be the most problematic.  Bear in mind, the difference between the least and most expensive is not as costly as one day of machine time.

CNC Sales Considerations

In the last decade small CNC sales have become very competitive. Each CNC company wants an edge to increase sales. There are many companies that “spin” or “hype” normal specs into something that sounds above normal. Most of the companies have different features, in construction or simply because they purchase different parts than other companies. either

To gain sales these different features are describes as “unique” or something akin to “magic”, as compared to the competition. There is no magic. The transformation from “what we sell” into “magic you will buy” is purely marketing hype. The fact is, in today’s competitive global marketplace, if you pay less for one machine than another, you simply receive less; less in quantity, or less in quality.

Pay Attention to the Catch Phrases

As you look at online brochures or talk to a company’s sales person, find out if that company has something legitimate to promote or they if have something different. Some use outright sleight of hand by directing you in one direction so that you won’t look in another. Also beware of the industry “buzz words”. Anytime a successful marketing campaign from one manufacturer uses a “buzz word”, their competitors will try to find a way to include that word or phrase in their respective advertising. Pay attention to what sales people don’t say. Watch out for specs that are published for one model and not another. Find out what is not included with a product and what it will cost to add it.

At CAMaster, we use machinery, hardware and software to facilitate and increase your company’s productivity and efficiency. Our team has a vast knowledge base and we are committed to sharing our experience with you to help you take your enterprise to the next level. Call us today to talk to us about our CNC router options.