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How To Keep Aluminum From Warping When Welding. Work Hot and Fast- A lot of damage or excessive warping when welding could be from dwelling too long in a small area when welding. How to Prevent Warping When Welding - Kevin Caron.
Tomorrow I am building an air tight box for blow forming polycarbonate. Leave enough finish allowance for a full cleanup after the part springs. Try putting a 516 wide square strip between them rotated 45 degrees to give you a built-in bevel to fill.
Place welds near the neutral axis or the center of the part.
If you want to reduce the weld metal in the fillet weld then using a slightly convex or flat bead. Make 4 small balanced beads instead of one heavy unbalanced one. Reclamp it in a relaxed state and finish. While working on.