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2. CNC router - Wikipedia

   en.wikipedia.org/wiki/CNC_router

   Many manufacturers offer A and B axis for full 5-axis capabilities and rotary 4th axis. Common industrial CNC router sizes include 4 × 8 feet and 5 × 10 feet. Many CNC routers today are made of aluminum extrusion which provide great flexibility as this can be shipped from almost anywhere unassembled but also provides size options.

3. Milling (machining) - Wikipedia

   en.wikipedia.org/wiki/Milling_(machining)

   Thin wall milling of aluminum using a water based cutting fluid on the milling cutter. Most CNC milling machines (also called machining centers) are computer controlled vertical mills with the ability to move the spindle vertically along the Z-axis.

4. Speeds and feeds - Wikipedia

   en.wikipedia.org/wiki/Speeds_and_feeds

   Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.

5. Numerical control - Wikipedia

   en.wikipedia.org/wiki/Numerical_control

   Functions include: face milling, shoulder milling, tapping, drilling and some even offer turning. Today, CNC mills can have 3 to 6 axes. Most CNC mills require placing the workpiece on or in them and must be at least as big as the workpiece, but new 3-axis machines are being produced that are much smaller.

6. Unimat - Wikipedia

   en.wikipedia.org/wiki/Unimat

   This model of the Unimat 1 has many plastic parts and plastic machining cross slides. It is capable of working wood, plastic and soft metals i.e. aluminum and brass. It is the same machine as the basic with additional capabilities such as wood turning, sawing, drilling, milling and metal turning. Unimat PowerLine

7. Surface feet per minute - Wikipedia

   en.wikipedia.org/wiki/Surface_feet_per_minute

   SFM is a combination of diameter and the velocity of the material measured in feet-per-minute as the spindle of a milling machine or lathe. 1 SFM equals 0.00508 surface meter per second (meter per second, or m/s, is the SI unit of speed). The faster the spindle turns, and/or the larger the diameter, the higher the SFM.