Plasma Cutters

About Plasma Cutters

Plasma cutters are precision metalworking tools that use an accelerated jet of hot plasma to slice through electrically conductive materials with exceptional speed and accuracy. MyToolShed.co.uk stocks a comprehensive range of plasma cutting equipment including complete systems, replacement torches, and essential consumables from trusted brands like Draper and Sealey. These versatile machines cut through steel, stainless steel, aluminium, brass, and copper far more efficiently than traditional methods, producing clean edges with minimal heat distortion.

Our plasma cutter collection features everything from compact 25-amp units ideal for sheet metal and occasional use, through to robust 60-amp high-frequency models capable of cutting thick steel plate. Beyond complete cutting systems, MyToolShed.co.uk maintains extensive stocks of replacement electrodes, nozzles, ceramic shrouds, and safety caps to keep your equipment operating at peak performance with minimal downtime.

Applications

Plasma cutting technology serves diverse trades and industries across the UK:

• Fabricators and Welders: Precision cutting of steel components, brackets, and custom metalwork in fabrication shops
• Automotive Technicians: Bodywork repairs, exhaust modifications, and vehicle restoration projects
• Agricultural Engineers: Farm machinery repairs, cutting heavy gauge steel, and general maintenance work
• Construction Contractors: Cutting structural steel, rebar, and metal framework on building sites
• HVAC Engineers: Precision cutting of ductwork and metal sheeting for heating and ventilation installations
• Metal Artists: Creating decorative metalwork, gates, railings, and artistic sculptures
• Maintenance Engineers: Quick, clean cuts for industrial equipment repairs and modifications
• DIY Enthusiasts: Home workshop projects, garden structures, and restoration work

Choosing The Right Plasma Cutters

Cutting Capacity: Match amperage to your material thickness requirements. A 25-amp unit cuts up to 6mm steel, 40-amp models handle 12mm effectively, whilst 60-amp cutters manage 18mm mild steel cleanly. Always prioritise the "clean cut" rating for professional-quality results.

Power Requirements: Most domestic plasma cutters operate on standard 240v single-phase power from a 13A plug, though larger industrial models may need dedicated circuits. Consider machines with thermal overload protection for extended use.

Duty Cycle: Professional workshops benefit from 60-80% duty cycles for continuous operation, whilst hobbyists typically work within 35-40% duty cycles. Higher duty cycles mean less downtime between cutting sessions.

Starting Technology: High-frequency start systems reduce consumable wear and improve performance on painted or contaminated surfaces. Pilot arc technology offers superior reliability for professional applications.

Consumables Availability: Ensure replacement electrodes, nozzles, and shrouds are readily available. Standardised consumables from established brands provide better long-term value across the UK market.

Safety Information

Always wear a welding helmet with appropriate shade rating (typically shade 5-8) to protect against intense UV and infrared radiation. Standard safety glasses provide insufficient protection. Wear flame-resistant clothing, leather gloves, and steel-toe boots, avoiding synthetic fabrics that can melt.

Plasma cutting produces hazardous metal fumes requiring adequate ventilation or local exhaust systems, particularly when cutting coated or galvanised materials. Ensure proper earthing of equipment and never operate in wet conditions. Keep suitable fire extinguishers nearby and remove flammable materials from the cutting area, as hot metal particles travel considerable distances.

Frequently Asked Questions

What thickness can a 40-amp plasma cutter handle?

A 40-amp plasma cutter typically provides clean cuts through mild steel up to 10-12mm thick, with maximum severance capacity around 16mm. For regular professional work, operate within the clean-cut range for optimal results and reduced consumable wear.

How long do plasma cutter consumables last?

Under ideal conditions with proper air filtration, electrodes last 1-2 hours of arc time whilst nozzles achieve 2-3 hours. Consumable life varies based on amperage settings, material type, cutting technique, and air quality. Poor technique or contaminated air supply dramatically reduces lifespan, so keeping spare electrodes, nozzles, and shrouds ensures minimal downtime.

What size air compressor do I need?

Generally, 25-40 amp units require approximately 120-150 litres per minute at 5-6 bar pressure. A compressor rated at 14-21 CFM with a 50-100 litre receiver tank provides adequate supply. Crucially, include proper air filtration, as moisture and contaminants drastically reduce consumable life and cutting quality.