Yesterday wen’t with other things so I weren’t able to work at garage. Also today I arrived a bit later than originally planned, but at least the frames are now welded:
As you can see the last one is not grinded yet since it got too dark outside and I did not bother to set up lights there. I try always do grinding outside if possible since I don’t like cleaning/vacuuming that much.
Hopefully I’m able to work with this at least one evening before the weekend, but that remains to be seen…
Here is one photo how I used the first frame as a jig to ease the welding of the others:
After welding those horizontal seams I grinded the vertical seams fully open and welded those. So the end result should now be 100% welded seams without any unwelded sections inside.