... that is disappointing for anyone. Partial rewind on that. I have decided to include some experimental chairing in 223a, so that folks can experiment with 3D print settings if they wish. But only for plain track at this stage, and only for REA S1 ordinary chairs (3 -hole): 2_171616_200000002.png 2_171616_200000001.png 223a should be available soon. cheers, Martin. posted: 19 Apr 2019 13:08 from: Martin Wynne I have added a function to make fine adjustments to the track gauge after doing trial 3D prints: 2_190744_590000000.png This is for 3D printing only, not for template design. The chair jaws and rail seat are shifted a fraction, but not the chair base (because that is fixed and shown on the 2D printed templates). What this means is that if you enter more than a tiny gauge adjustment, you will either spoil the chairs, or get a very silly result like this: 2_190748_530000000.png If the gauge is more than a fraction out after 3D printing, it would be better to scale the entire output to suit your ...