Making front part again

I made the front part again.

 This time, I cutted the length 900 mm and I made some incisions on same time.

I drew on board directly. Last time I drew it on paper and when I welded, the paper was burned.

For welding BB shell, I did this cutting.

To adjust, I used a hand grinder.

The center width is 129mm. This time, I will weld them with cramping.
It became cloudy. To weld, Sun light is needed, because it's hard to observe through dark glass.

Before crumping, I cleaned 2 BB shells.

The disc is changed to rough grinding and finish.

How should be the hole covered ?

The soldering may be better way.
fine.