... seen this on both sides of a curve. How is the necessity actually determined? Have I got it right? If not what am I missing? Cheers Dave Attachment: attach_2132_2687_Straight_Scissors _2FS.box 242 Last edited on 21 May 2015 00:39 by dave turner posted: 21 May 2015 02:17 from: Martin Wynne Hi Dave, The essential part of a check rail is the section directly opposite the gap in the crossing. Here I have marked those areas in yellow and the essential sections of the check rail in red: 2_202051_230000000.png Outside of that section, the general idea is to use standard components as far as possible, and special one-offs only where unavoidable. At ends A it's unlikely that a bent flare would fit, so your machined flare looks about right. See the photos in the link below. The check rails could perhaps be shortened a bit though, timbers and chairing permitted -- you need rather more clearance for the backs of the wheels on the running rails at A. At B you might fit shortened bent flares, ...