... used a B-7 instead, and eased the curving radius a bit, which gets the turnout radius to a more respectable 42": 2_160434_510000001.png I also changed turnout A to a right-hand turnout, so that the turnout road forms part of the crossover, instead of the running line. This allows the running lines to form the ruling curves, with turnouts branching from them, in a more prototypical manner. Here I replaced the turnouts with plain track, to illustrate that. The grey tracks are your originals: 2_160434_510000000.png The curves include transition curves, which in some cases stray into the turnouts. That's not entirely prototypical, but in fitting a model into a small space is sometimes unavoidable. Once the template is printed, the fact that the curve through it is on a transition makes no practical difference to model construction. Would you like me to finish this and post the .box file? There isn't much point if your ideas are still in flux. For example I am mystified by your reference to a gravel shed? I have the ...