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Process of plasma cutting
Plasma cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. Typical materials cut with a plasma torch include steel, stainless steel, aluminum, brass and copper, although other conductive metals may be cut as well. Plasma cutting is often used in fabrication shops, automotive repair and restoration, industrial construction, and salvage and scrapping operations. Due to the high speed and precision cuts combined with low cost, plasma cutting sees widespread use from large-scale industrial CNC applications down to small hobbyist shops.
How to cut with a Plasma cutting torch
The actual process of operating a hand-held air plasma cutter unit is relatively simple. In fact, the hardest part comes before ever striking an arc-selecting a machine that best matches your application and choosing the right accessories
The first questions to ask when selecting a plasma cutter relate to cutting capacity:
- What thickness of metal will you routinely cut?
- What is the maximum thickness you might cut?
- How fast do you want to cut?
Like a welding machine, a plasma cutter’s amperage and voltage capacities determine its “size.” Note that the plasma process requires relatively high voltage and low amperage levels, the opposite of welding. Many people erroneously judge a plasma machine solely by amperage. While this is an important indicator, remember that total output power (in watts) equals amperage times voltage. Do the math to obtain a more accurate product comparison.
For instance, Miller Electric’s Spectrum 125C is 12-amp unit rated at 110 VDC (1,320 watts total). This provides a quality cut on 3/16-in. steel and will sever 1/4-in. steel. The cutting capacity of a particular “size” plasma machine varies greatly by manufacturer. The following table provides an indication of the maximum cutting performance you can expect from a Miller hand-held unit.
10 CNC Plasma Cutter Project Ideas
So you’re thinking about CNC Plasma Cutters (also called Plasma Tables) and you’re wondering what you might make with one. Here’s a bunch of ideas to get the juices flowing.
Yard Art
Turn an old saw into artwork…
Signs
House number with brushed and rusted finishes…
A sign for your teenage daughter’s bedroom…
Outdoor Furniture
Nicely made fire pit…
Plasma cut patio wall sconce…
Indoor Decor
Fireplace screen…
Gates
Nicely made gate…
Cute design for a garden gate…
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