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Inverter-based stick welders are lightweight (typical 5-10kg), portable, and produce smooth DC output suited to fine welding and stainless work. Modern inverters match transformer welders for output but use far less input current and run quietly. Best for trade-mobile and general workshop use. Transformer-rectifier welders are heavier (typical 30-100kg+) and more rugged, with the broad current range needed for heavy structural and high-current welding. Best for industrial fabrication and where AC output is needed for some specific rod types.

Match output to the rod size and material thickness. For 2.5mm rods (light fabrication, sheet steel up to 3mm): 60-100 amps. For 3.2mm rods (general fabrication, plate up to 6mm): 90-140 amps. For 4.0mm rods (heavy fabrication, plate up to 10mm): 130-200 amps. For 5.0mm rods (heavy structural, plate over 10mm): 200-300+ amps. Always specify a welder rated above the maximum current you'll use, with duty cycle margin for sustained welding. The rated current is listed on every product page.

Duty cycle is the percentage of a 10-minute period the welder can run at its rated output without overheating. A 60% duty cycle at 200 amps means the welder can run at 200 amps for 6 minutes out of every 10. Lower duty cycles (15-30%) limit continuous welding to short bursts; higher duty cycles (60-80%) suit production fabrication. Cheap welders often quote rated output with very low duty cycles — read the duty-cycle figure carefully. Trade welders typically quote 60% duty cycle as the trade benchmark.

Most modern arc welders run rutile rods (the general-purpose orange-coated rods — easy striking, good appearance) without issue. Cellulosic rods (used in pipe-welding for downhill technique) need higher open-circuit voltage and may not strike on lower-OCV inverters. Basic-coated low-hydrogen rods (used in structural and pressure-vessel work) need DC output (DC-positive typically) and are best run from inverters or DC transformer-rectifiers. Match the welder to the rod-type capability; the rod compatibility is listed on every welder product page.

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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Arc Welder

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Within Welding Machines, Arc Welder covers the manual metal-arc (MMA) welding machines — also known as stick welders — used in workshop, fabrication, structural-steel, and field-welding work where the simplicity, robustness, and outdoor-tolerance of stick welding outweighs the higher productivity of MIG. Stick welding works on essentially any current source (AC or DC) and runs from any consumable rod-type the operator selects, including the cellulosic and basic-coated rods used in pipe-welding and structural work where MIG isn't suitable.

Parts for Machines supplies arc welders across the trade and professional ranges, covering both inverter-based stick welders (lightweight, portable, with smooth DC output for fine welds) and the older transformer-rectifier stick welders (heavier, more rugged, with the broad current range needed for heavy fabrication). Rated current outputs typically run from 130 amps (light home-shop and trade-mobile use) up to 400+ amps (heavy structural and pipe-welding work).

We are an authorised distributor and seller of Sealey, SIP, and Clarke across the arc welder range. Sealey and SIP cover the broadest selection — inverter-based stick welders for trade portability, larger transformer-rectifier welders for heavy fabrication, and the matched accessories (electrode holders, earth clamps, welding cables, electrode storage). Clarke extends the range with workshop and home-shop variants.

Product pages list the rated current output (in amps), the duty cycle (the percentage of a 10-minute period the welder can run at the rated output without overheating — typical 60% duty cycle on trade welders), the input voltage (230V single-phase for compact inverters; 400V three-phase for larger transformer-rectifiers), the output type (DC for inverters; AC or DC for some transformer-rectifiers), the open-circuit voltage (affects how easily rods strike), the electrode capacity (which rod sizes the welder can run, typical 2.5mm-5.0mm), and the weight. Trade pricing on multi-unit orders is available; contact the team via WhatsApp 07754288583.

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FAQs

Inverter-based stick welders are lightweight (typical 5-10kg), portable, and produce smooth DC output suited to fine welding and stainless work. Modern inverters match transformer welders for output but use far less input current and run quietly. Best for trade-mobile and general workshop use. Transformer-rectifier welders are heavier (typical 30-100kg+) and more rugged, with the broad current range needed for heavy structural and high-current welding. Best for industrial fabrication and where AC output is needed for some specific rod types.

Match output to the rod size and material thickness. For 2.5mm rods (light fabrication, sheet steel up to 3mm): 60-100 amps. For 3.2mm rods (general fabrication, plate up to 6mm): 90-140 amps. For 4.0mm rods (heavy fabrication, plate up to 10mm): 130-200 amps. For 5.0mm rods (heavy structural, plate over 10mm): 200-300+ amps. Always specify a welder rated above the maximum current you'll use, with duty cycle margin for sustained welding. The rated current is listed on every product page.

Duty cycle is the percentage of a 10-minute period the welder can run at its rated output without overheating. A 60% duty cycle at 200 amps means the welder can run at 200 amps for 6 minutes out of every 10. Lower duty cycles (15-30%) limit continuous welding to short bursts; higher duty cycles (60-80%) suit production fabrication. Cheap welders often quote rated output with very low duty cycles — read the duty-cycle figure carefully. Trade welders typically quote 60% duty cycle as the trade benchmark.

Most modern arc welders run rutile rods (the general-purpose orange-coated rods — easy striking, good appearance) without issue. Cellulosic rods (used in pipe-welding for downhill technique) need higher open-circuit voltage and may not strike on lower-OCV inverters. Basic-coated low-hydrogen rods (used in structural and pressure-vessel work) need DC output (DC-positive typically) and are best run from inverters or DC transformer-rectifiers. Match the welder to the rod-type capability; the rod compatibility is listed on every welder product page.

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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