A crawlspace doorframe I made w/bedrail. My first welding project of consequence. Strong-enough for what it's gonna be used for. It will be hinged on one side, I think 3" SS hinges will work. I might use only two hinge plate holes on each hinge attached to the frame. The wall is stucco-coated CBS construction so the wall hinge plates will get probably 3/16" phillips head tapcon screws of around 2".
Inset into the angle iron, I plan to use something like 3/4" X 1/8" steel strap laid flat to fasten some fine SS mesh screen sandwiched between the angle iron and the steel strap.
I mitered the corners, I tried to use a 14" chop saw, it cuts vertically-positioned stock like angle iron, but when it hits the horizontally-positioned angle, the cutting is slow. I could re-position it to be in a vertical plane but that entailed futzing with the angle position bracket on the chop saw. I realized using an angle grinder w/a cut-off blade would cut the stock much quicker, but maybe not as-pretty an oblique angle achieved.
On the interior angles, I didn't know what to use to flatten/dress the bulky welds, maybe some sort of a small-diameter stone and a die grinder? I didn't want to spend the time with a hand file.
I'm gonna try the tip to anneal the metal before drilling. I have an oxy-acetylene torch, I assume that you get it cherry-red hot, and then before it cools, do the drilling?





I wasn't going for 'perfect' but just strong-enough ('perfect' isn't in my welding skills lexicon as an achievement yet). Once it's all-done I may take it to the powdercoater instead of using some oil-base paint. I was planning on putting a couple of drain holes on the bottom horizontal angle iron leg, so it wouldn't collect and hold standing water. This is South FL, we get ~60" of rain a year.