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FAQs

The combined thickness of the sheets being joined, quoted for mild steel — a 2mm + 2mm rating joins two 2mm panels. Work within it: pushing past capacity makes cold, weak nuggets. Coated and high-strength steels effectively reduce capacity, so leave margin if you repair modern panels.

Both have their place. Spot welding replicates the factory joint on flanged seams — fast, clean, no filler, minimal distortion — and is the professional standard where electrode access exists on both sides. MIG plug-welding covers single-side access and structural seams. Bodyshops run both; the MIG range sits in the same Welding Machines section.

They set the machine's reach into the panel: arm length is how far from the edge the electrodes can land, gap is the depth of flange or box section they clear. Repair work on sills, wings and door skins needs enough reach to hit the original weld line — check the arm specifications against the panels you actually repair.

Three things: clean, bare metal at the joint (strip paint, primer and zinc locally), dressed electrodes — pitted tips are the classic cause of weak welds and replacements are cheap — and consistent timing, which the timer-controlled machines in the range handle automatically. Test on offcuts of the same steel before committing to the panel.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. 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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Spot Welder

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Spot welders join sheet steel the way vehicle factories do: clamping two panels between electrodes and fusing them with a timed pulse of current, no filler, no torch, just a clean resistance weld. PartsForMachines supplies spot welders to UK bodyshops, fabricators and trade workshops as an Authorised Distributor and Seller for SIP and Sealey, from portable hand-held units for repair work to heavier bench and arm configurations.

The working specifications sit on every product page: welding capacity as combined sheet thickness (the headline figure, typically quoted for mild steel), arm reach and gap, which set how far into a panel the electrodes can land, duty cycle, and supply requirement, since heavier units want a generous single-phase or three-phase circuit. Timer control matters for repeatability: consistent current time is what separates a strong, clean nugget from a burnt or cold weld, and the timed units in the range take that judgement off the operator.

Bodywork is the natural home of the category, replicating factory spot welds on repair panels, and electrode condition decides weld quality there: tips dress or replace cheaply and should, because pitted electrodes make weak welds. Electrode arms, tips and consumables for the machines carried here are listed in the brand spare-parts sections, matched by the machine's product code.

Compare lines up candidate machines side by side on capacity, reach and supply, similar models appear on each listing, and Ask Simon answers panel-thickness and supply questions before you commit. For bodyshop fit-outs or capacity questions, contact the team via WhatsApp 07754288583.

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FAQs

The combined thickness of the sheets being joined, quoted for mild steel — a 2mm + 2mm rating joins two 2mm panels. Work within it: pushing past capacity makes cold, weak nuggets. Coated and high-strength steels effectively reduce capacity, so leave margin if you repair modern panels.

Both have their place. Spot welding replicates the factory joint on flanged seams — fast, clean, no filler, minimal distortion — and is the professional standard where electrode access exists on both sides. MIG plug-welding covers single-side access and structural seams. Bodyshops run both; the MIG range sits in the same Welding Machines section.

They set the machine's reach into the panel: arm length is how far from the edge the electrodes can land, gap is the depth of flange or box section they clear. Repair work on sills, wings and door skins needs enough reach to hit the original weld line — check the arm specifications against the panels you actually repair.

Three things: clean, bare metal at the joint (strip paint, primer and zinc locally), dressed electrodes — pitted tips are the classic cause of weak welds and replacements are cheap — and consistent timing, which the timer-controlled machines in the range handle automatically. Test on offcuts of the same steel before committing to the panel.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. 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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