Home » Tack Tack Written by Bryan Joslin on November 1, 2023 A small, temporary weld that holds pieces together before the final welding process. Related Articles: Basic Steps For Repairing Rust Body PanelsUrethane Paint Safety And Application InstructionsEastwood DIY Auto Painting FAQ’sHow to Use Eastwood Candeez Urethane PaintHow to Paint Your Car With Single Stage Paint