... I have great trouble getting them to join, even the "get out of jail free" function (aka slew) doesn't help a lot. Am I trying to do something that's geometrically impossible? Or is having a transition curve the problem? Incidentally, I would find some indication of when and when not to use transitions useful. Robert Preston Attachment: attach_849_1217_inside_curve.box 200 posted: 26 Aug 2010 22:31 from: Martin Wynne Hi Robert, There are several possible solutions, but the simplest is two transition curve templates: 2_261703_520000001.png These have a common radius of about 1315mm at the centre, reducing to about 1120mm radius at the outer ends. I created them using the "make transition" function, described in this tutorial: http://www.templot.com/martweb/info_files/make_trans.htm First I did tools> make branch track on the turnout templates. Then I positioned a dummy template (blue) outside of them using the F10 swell mouse action: 2_261703_510000000.png Then use "make transition" to the dummy template to create each transition curve template. ...