What can occur if the tip is too large during oxy welding?

When using oxy welding, if the tip of the torch is too large, it can lead to an uncontrollable weld pool. A larger tip produces more heat than necessary for the materials being welded, which can cause the weld pool to expand and become difficult to manage. This excessive heat can result in several issues, such as warping, burning through the material, or creating an inconsistent weld bead. Proper heat control is crucial in welding to ensure that the weld is strong and free of defects, and using an appropriately sized tip helps to maintain this control, allowing the welder to achieve the desired penetration and fusion of the base materials. Thus, managing the size of the tip is essential for effective welding practices.