... on my list. Also splitting the timbering into separate counts for sleepers and turnout timbers. I'm making some progress, as discussed on the 3D printing topic. Chairing works for equalized timbers or square-on, and the chairs remain on the rails when timbers are shoved*: 2_301200_590000000.png For 3D printing, the chairs go into the exported DXF files: 2_301202_320000000.png As you can see, there is a long way still to go. The chair jaws and keys to add, and then all the special switch and crossing chairs. 2_301203_170000000.png Of course this level of detail won't survive 3D printing in 4mm scale, but it might in 7mm, and should do in the larger scales. The screw heads are all at random angles. The bright colours in the screenshots are simply to make the details more visible. *not when crabbed. cheers, Martin. posted: 30 Jul 2018 17:34 from: Rob Manchester Martin Wynne wrote: I'm making some progress, as discussed on the 3D printing topic. Chairing works for equalized timbers or square-on ...