Javier L Posted July 28, 2017 Share Posted July 28, 2017 Hey guys! I'm an American modeler for British Ho. Right now I'm working on the Lbscr class E1, although I don't know how to make the shape for the roof. It has a weird sort of slope shape, I don't really know what to call it. If anyone knows how to model it in AutoCAD, id appreciate the advice! Take care Guys! Link to post Share on other sites More sharing options...
Marbelup Posted July 29, 2017 Share Posted July 29, 2017 I am not familiar with that loco, but I found some photos online. Although the photos are not that clear, and I don't have access to a drawing, it appears that the roof is a simple arc when viewed end on, but with a slope down to the front and back. Assuming my interpretation is reasonably correct, can you extrude the arc shape (with a flat bottom), then use "wire cut" to slice off the ends at the sloping angle? If necessary, the finished shape could be hollowed out from below to give a constant thickness to the roof. I don't use AutoCad, so I don't know the exact commands to use. (I use Rhino.) Link to post Share on other sites More sharing options...
Quarryscapes Posted July 29, 2017 Share Posted July 29, 2017 Hey guys! I'm an American modeler for British Ho. Right now I'm working on the Lbscr class E1, although I don't know how to make the shape for the roof. It has a weird sort of slope shape, I don't really know what to call it. If anyone knows how to model it in AutoCAD, id appreciate the advice! Take care Guys! Lofting is what you need, don't use AutoCad myself though so can't offer any more specific guidance. Link to post Share on other sites More sharing options...
Penrhos1920 Posted August 9, 2017 Share Posted August 9, 2017 (edited) Hopefully the drawing is self explanatory. The key is that the initial sector thickness is twice its height as I've tried to show with the extra lines. PS One thing to remember about almost any pre 1930s British steam loco is that the shapes were simple to construct on a drawing board. In this case the roof would have been drawn in both side and rear elevations as simple arcs. It wasn't until the streamliners of the 1930s that shapes became much more complex. Edited August 9, 2017 by Penrhos1920 1 Link to post Share on other sites More sharing options...
Javier L Posted August 9, 2017 Author Share Posted August 9, 2017 (edited) Hopefully the drawing is self explanatory. double arc roof tutorial.jpg The key is that the initial sector thickness is twice its height as I've tried to show with the extra lines. PS One thing to remember about almost any pre 1930s British steam loco is that the shapes were simple to construct on a drawing board. In this case the roof would have been drawn in both side and rear elevations as simple arcs. It wasn't until the streamliners of the 1930s that shapes became much more complex. Thank You so much Penhros! The visual helped me out a lot! I've also seen your thread about drawing a steam locomotive dome. I should also thank Marbelup because he said the exact same thing. I'm not too good at reading instructions, visuals usually help me If anything else has been left out ill leave this topic open for responses... Take Care Guys!!! Edited August 9, 2017 by Javier L Link to post Share on other sites More sharing options...
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