... 10mm, the lines measured 35mm and when set on 50mm, they all merged into one line 75mm wide. I have the% set at 5.4% as you asked and I'm guessing that is 5.4% of the total plan length shown in Templot as 15200mm or thereabouts. That would bring it down to 826mm, so near to my finished panel size. I'm guessing then the reduction only applies to the whole sheet size and the lines are set independently. Just tried setting the lines at 7mm and this was the outcome. 479_090543_390000000.jpg Getting somewhere....The lines are now 7mm, but of course the problem is now the spacing. Does this mean going back to Sketchboard to stretch the plan in the vertical access? I can't face having to redraw it all again with wider centres.... I'm guessing some mathematics may need to be done before starting in terms of panel size, line thickness and track spacing to end up with an optimum output, but in my head I can envisage issues with turnout angles and crossovers. I'm guessing the ...