... right are: V 6.75 K 7.29 K 7.29 V 7.99 I added the slip roads and did some timber shoving -- it looks ok. The slip radii came out at 76" and 64", so there should be no problems there. I made it a switch-diamond with movable K-crossings. You can see how tricky it would be to build it with fixed K-crossings needing check rails behind the slip rails. File attached (for TDV only) -- feel free to disregard it entirely. 2_182322_250000000.png 2_182322_250000000.png regards, Martin. Attachment: attach_1250_1486_eastwood_town_irr eg.box 206 posted: 19 Nov 2011 08:59 from: Gordon S Thanks again, Martin. Quite clearly that looks so much better. I'll pick up on your suggestions and try a straight section as the crossing and see how that pans out. Right now I'm at the limit of my capabilities, so no doubt I will be back with loads more questions. I just wish I had the ability to turn round these complex formations easily. posted: 19 Nov 2011 09 ...