I've started tinkering with drawing parts from the blueprints for a Spitfire Mk V. I am looking at this drawing for a support strut and I am wondering how one might actually manufacture it. In other words what would be the steps?
My current guess based on what I am assuming are the material specs in the upper left corner are
- Cut the 2 1/4" x 1 1/2" x 24 gauge in half to get 2 X 1 1/8" x 1 1/2" pieces. If I did the math right, the interior circumference will be in the 1.41" ball park.
- Roll these pieces tight enough to make a cylinder 1.5" long that you can just barely squeeze inside the Dural tube.
- Make sure the inserts are flush with the ends.
- Bend the pipe with inserts to create a curve with a 5" radius
- Place the bottom end in a press of some sort to flatten the end so the flat portion winds up in the middle of the pipe.
- SOMEHOW crimp the top end so that it generates a flat portion similar to the bottom but is done in a way that is off center slightly? so that no potion of the pipe is past the ten degree line?
- Drill two 1/4 holes. one in each end.
- Cut the rounded ends somehow.
Could someone shed some light on how step 6 would be achieved and how steps 7/8 would normally be done? I keep thinking a stamp of some sort could do it all in one step, but I am not educated in metal fabrication.
I am hoping that by better understanding the manufacturing methods to get to the end product, I will have a better understanding of how things should be drawn up.