Top Ten Things To Look For When Purchasing A Plasma ...

When considering the purchase of a plasma cutting machine, it's essential to thoroughly evaluate your options. Understanding the following ten factors can significantly influence your buying decision.

1. Determine the thickness of the metal that you will most frequently cut
The first consideration should be the thickness of the metal you'll be cutting. Plasma cutting machines have different amperage ratings based on cutting capacity. If your main requirement is cutting ¼" thick materials, you should look for a cutter with lower amperage. For thicker metals, a higher amperage machine will ensure quality cuts without excessive dross or slag accumulation. Familiarizing yourself with the optimal thickness for your proposed usage is crucial.

2. Select your optimal cutting speed
Evaluate whether your cutting needs are for a production environment, where speed is crucial, or for less time-sensitive applications. The manufacturer should provide cutting speed metrics measured in inches per minute (IPM). Higher amperage units will cut faster but ensure the selected machine can comfortably handle double the thickness of the metal you'll cut in bulk.

3. Alternative starting methods to high frequency
Most plasma cutters utilize high frequency to start arcs, which can interfere with sensitive electronic equipment. Look for models that feature alternative starting methods, such as a lift arc mechanism, to avoid potential interference.

4. Compare consumable costs and lifespan
Plasma cutters require consumable parts that wear out over time. Machines with fewer consumables will save you money in the long run. It is important to check the specifications of these consumables for lifespan, using consistent measurement standards for comparison.

5. Test the machine and check cut quality
Conduct test cuts on machines of interest, ensuring you maintain the same speed and material thickness to evaluate cut quality. You should assess factors like dross presence and the verticality of the cut edges.

6. Examine pilot to cut and cut to pilot transfers
The efficiency with which a plasma cutter transfers from pilot arc to cutting arc is vital for smooth operation, especially with expanded materials. Models offering quick transitions will be beneficial in fast-paced settings.

7. Assess working visibility
Good visibility while cutting is essential, especially when following patterns. Choosing a machine with an ergonomic and streamlined torch design can significantly enhance visibility.

8. Evaluate portability
If you intend to move your plasma cutter frequently, look for a lightweight model with good transport features such as a compact footprint and built-in storage for cables and consumables.

9. Determine machine durability
Select a unit designed for tough job site conditions. Look for protective features around controls and vulnerable components to prolong machine life and ensure consistent performance.

10. Ensure ease of operation and comfort
Finally, operating a plasma cutter should feel natural and straightforward. A well-laid-out control panel and ergonomic torch design will facilitate user interaction and reduce the learning curve.

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