Can it weld copper? UF20B tested — 0.15mm copper penetration
Bright, rounded welds — raw peel-test footage included.
UF20B uses brand-new quality supercapacitors (500k cycles) for sustained welding power: steadier (millisecond dual-pulse, no heat or blown tubes in continuous work), longer-lasting (real-time storage, +100% endurance), stronger (10500W, welds 0.4mm, handles copper) and durable.
A color screen locks in six core factors for thousands of fine settings; boosted by a smart hand pen (40cm, removable alumina-copper pins) and a foot switch.
For power-tool and appliance repair, small-to-medium pack assembly, coin cells, phone repair and metal joining.
Aluminum-and-plastic body, 181×95×80mm, about 1.25kg.
Highlights
No refurbished or imported salvaged capacitors — brand-new automotive-grade supercapacitors run at rated voltage for double safety and stability.
Millisecond energy plus dual-pulse: Ni-plated/steel 0.4mm, pure nickel 0.25mm, copper 0.15mm (with flux).
The supercapacitor recharges in seconds, so continuous welding never waits or fades.
AT auto mode (smart sensing, batch work) · MT hand-pen mode (precise triggering, fine work) · MT foot-switch mode (hands and feet together).
How thick can it weld
Lab maximums; results vary with material batch and conditions, so test on scrap first.
Putting everything into every welder, so it is worthy of the people who use it — that is AWithZ's baseline.
— AWithZ brand philosophy
Placeholder body (taken from the UF20B product intro and highlights); the Blog content source is pending from the brand.
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