As you can see, there are about half-a-dozen sections to go and the right-hand panel isn't even started. I can't use 4/0 as they are too coarse and I can't use 8/0 because they aren't strong enough to cut this steel. SO, I have to wait until the tool shops open on Monday!
I suppose I should view this as a charming left-over of the Victorian era, but I don't. Of course, I should really have bought more blades when I saw that I was running out...