About Butt Weld Clamps & Backers Kit
The 4 butt-weld clamps align panels edge-to-edge and surface-to-surface, with the appropriate 0.040" gap that helps you produce clean welds with full penetration, minimal grinding. Use a magnetic copper welding backer (4" and 8" included) as a hands-free backing support when butt-welding and welding holes in sheet metal or whenever an open area needs to be bridged with a weld; prevents warping and burn-thru. Welding material will not stick to the copper plate.
Wear appropriate eye, hand and body protection.
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