I welded the plate at the top and bottom side just to be sure that it's strong enough. There is quite some splatter despite using an anti-splatter spray.
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Again, not very pretty but it is strong and after passing over it with a grinder it looked much better.
I've welded the plate to the square tubing before welding it to the frame to avoid welding upside down.
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Then it was time to weld it to the frame. I've started first with welding on remaining square tubing that surrounds the plate.
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