... 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 3D printer -- output> enlarge/reduce size> menu items, and tick the scaled box at the top of the DXF dialog above. Or alternatively do the scaling in your printer's slicer software. p.s. I'm posting these notes before 223a is released mainly as an aide-memoire for myself. Otherwise I shall almost certainly forget to mention some of the details later. Or all ...