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Step 3Strengthening the Frame
On the side of the square with the overlapping aluminum, I drilled three holes and used a pop rivet gun to attach them together.
This held the square together, but it needed more to keep the corners at 90 degree angles. I cut two corners off of a steel plate with a jigsaw to make two right triangles. I drilled holes through the steel triangles and opposite corners of aluminum, and pop riveted those together. Now the frame was much stiffer.
This held the square together, but it needed more to keep the corners at 90 degree angles. I cut two corners off of a steel plate with a jigsaw to make two right triangles. I drilled holes through the steel triangles and opposite corners of aluminum, and pop riveted those together. Now the frame was much stiffer.
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