N7 Half Height Coal Bars on the Rear of the Cab

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 engineĀ  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.

N7/3 Scratch Built Rear Window Half Coal Bars

N7/3 Scratch Built Rear Window Half Coal Bars

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.