While plasma cutters are highly versatile and effective for cutting various types of metals, there are certain materials and conditions where using a plasma cutter is not advisable. Here’s a list of what you should avoid cutting with a plasma cutter:

Materials to Avoid Cutting with a Plasma Cutter
Non-Conductive Materials

Wood: Plasma cutters rely on electrical conductivity to create the plasma arc, so non-conductive materials like wood cannot be cut.
Plastic: Similar to wood, plastics are non-conductive and can also release harmful fumes when exposed to high temperatures.
Glass: Glass does not conduct electricity and can shatter under the intense heat of a plasma cutter.
Certain Metals

Tempered Steel: Cutting tempered steel can cause it to lose its tempering properties, affecting its strength and durability.
Titanium: While technically possible, cutting titanium requires specialized equipment and expertise due to its reactivity at high temperatures.
Materials Coated with Hazardous Substances

Galvanized Steel: The zinc coating on galvanized steel can produce toxic fumes when cut with a plasma cutter.
Lead-Coated Metals: Lead coatings can release harmful lead vapors during the cutting process.
Explosive or Flammable Materials

Any material that is explosive or highly flammable should never be cut with a plasma cutter due to the risk of ignition from the high-temperature arc.
Conditions to Avoid When Using a Plasma Cutter
Wet or Damp Environments

Using a plasma cutter in wet conditions can pose serious electrical hazards.
Poor Ventilation

Always ensure adequate ventilation when using a plasma cutter to avoid inhaling potentially harmful fumes generated during the cutting process.
Inadequate Safety Gear

Never operate a plasma [ur=https://www.utech-cnc.com/l]cutter manufacturer[/url] without proper safety gear including gloves, eye protection, and protective clothing.
By avoiding these materials and conditions, you can ensure safe and effective use of your plasma cutter while minimizing risks associated with improper usage.