... can very easily take the wrong road in flat-angle fixed K-crossings. You could consider tightening things up by using 00-SF instead of 00-BF -- see: http://groups.yahoo.com/group/00-SF In fact a switch-diamond is quite a bit easier to build than fixed K-crossings, the only disadvantage being the need for additional point motors. Prepare the moving diamond points by first bending the end like this, so that the tip is solid metal at x: switch_diamond_points.png (Diagram shows the rail head in yellow and the web in orange. The rail foot for FB is not shown.) regards, Martin. posted: 23 Dec 2007 18:35 from: davelong Hi Martin Thanks for the reply, I'm not so sure on OO-SF, I've re read several of the RMweb topics on this and I myself am not too much of a fan of OO either scale but there are a few reasons why, I don't jump to atleast EM and/or P4. I'd ...