Hi Willie, that makes sense. I was using the same reasoning. When I looked at the prototype photo, it looked like they had their shingles closer together, so I tightened them up from a scale 12" to scale 8" exposed. Not a huge difference but my wife thought the appearance was better.
Here is taking off the old row, it went easily, helping me understand how much glue it was going to take. Some came off a little too easy so I have to be sure and get enough but not have it gooping out all over the place. Luckily, a little white glue coming out does not show at all:
I made this cut-out to help me get the strip sizes for the turret; I am only putting on a few strips at a time so they can dry and not risk being moved around as the glue takes a while to set up:
Here I have a few rows done, I am trying to use shingles from different places on the sheet so the whole thing ties together well. I am also just putting on a row or two in an area at a time so they can set up and I do not risk moving them in the handling process:
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It looks like I need to straighten that last row a little. I have a scale 8 x 8" that I have been using to get them right, but if I am not careful it is easy to slip them out of place.