... (68"). That's a lot larger than your quoted 60"/48" (which sounds unlikely for 0 gauge -- did you make a mistake there?) Please don't actually build this tandem, the .box file is solely to allow you align adjacent templates to your existing item of pointwork. The 8.93 V-crossing cannot be properly checked as you can see -- as drawn the wheel flange is obstructed. On the Marcway tandem that check rail is missing, so there is a risk of derailments. 2_131408_490000000.png I converted your scan to a negative image, to make it easier to see the rail edges: 2_131409_190000000.png .box file attached. I will post the .bgs and .sk81 files next. cheers, Martin. Attachment: attach_2749_3326_ray_tandem.box 189 posted: 13 Sep 2018 19:23 from: Martin Wynne BGS file Attachment: attach_2750_3326_ray_tandem.bgs 171 posted: 13 Sep 2018 19:24 from: Martin Wynne SK81 file. Attachment: attach_2751_3326_ray_tandem.sk81 201 posted: 13 Sep 2018 21:34 from: r_wilton Many thanks Martin, your a star. 72 ...