One of the more difficult aspects of the refurbishment of the N7 in my mind was the half height coal bars on the rear windows of the cab and I had been wracking my brains as to the best method of drilling the rear of the cab in situ to get the holes both in a line and equally spaced while not being able to get the drill bit at 90 degrees to the workpiece.
At the same time I was also struggling from the photos that I had to work out just how many bars there are as luck would have it a bit of web surfing turned up a partial shot of the back of the cab back of the preserved engine and this a is a further snip of that showing my get out of jail free card
This meant that I could make them off the loco and fit them as a single unit. Some time later making best use of the Proxxon mini drill and coordinate table, had me with two pairs of strips each with 9 x 0.5mm holes 1.2mm apart. The eagle eyed will also note that I have put additional holes in each end for the retaining bolts.
Before packing it in for the night I had the first one soldered up ready for fitting.
I just need to do the other and then I think that I have broken the back of the difficult bits so I will return to the J6 until the rest of the parts orders arrive.