... or both rails? Hi Brian, It's either a plain set in the turnout side stock rail only (undercut switch planing), or a joggle in both rails (straight-cut switch planing). That's not just for pre-grouping, it's for all bullhead. GWR and BR(W) used joggles throughout. Other companies used the REA designs with joggles in running-line facing turnouts only, and a plain set in other turnouts. This shows a plain set, thanks to Rod Cameron for the photo: stock_rail_rea.jpg It's very difficult to make an accurate prototypical joggle. A set in one side only is much easier to model, and the easiest way to make it is: 2_041840_270000000.png 2_041828_140000000.png Hopefully the diagrams are self-explanatory. Just two bits of rail about an inch long laid side by side with a gap between. The smaller the gap, so the harder you need to press/hit, but the more precisely located will be the bend. Make sure the rail is exactly square across them before making the bend -- ...