I gave up trying to make the top at an angle (for now) so I am using the standard 0 top layers which works ok.
I gave Project Miller from Autodesk a try (I read about it on Entiresias blog http://3dprintednudes.blogspot.dk great site) it did turn out quite messy but the idea shows.
Thanks for all the help 
Carsten
]]>A lot of the surface is generated with the Soap Skin Bubble plugin where I can't get the push/pull to work as i want.
@grob did try a quick print of your .stl, came out ok I think...
Meant to mention before - those are some tidy looking prints you're getting out of your machine! Good work!
Yeah, I have very little Sketchup experience so can't really recommend anything - I'm surprised there isn't a working 'shell' tool out there somewhere, they're pretty much universal in the commercial software. Maybe keep battling with the settings in the push-pull tool?
]]>A lot of the surface is generated with the Soap Skin Bubble plugin where I can't get the push/pull to work as i want.
@grob did try a quick print of your .stl, came out ok I think...
Push/Pull can be very finicky to work with and it as almost certain that it will mess with the geometry. I guess that is why it's free although I bet other programs have their own set of problems.
]]>@grob did try a quick print of your .stl, came out ok I think...
]]>Yes, that is exactly what I mean :-)
I did have a feeling I needed to take the approach you describe. Do you, or anyone else, know if I can take my existing SketchUp design and somehow inflate the walls?
I use SketchUp (free), meshlab, netfabb etc.
You could try the offset tool and then push/pull the surface. But, nothing in Sketch-/up to inflate the entire thing as far as I am aware.
]]>I did have a feeling I needed to take the approach you describe. Do you, or anyone else, know if I can take my existing SketchUp design and somehow inflate the walls?
I use SketchUp (free), meshlab, netfabb etc.
]]>However, if you want more control over the open faces as you describe, it may not be possible to use this method.
I'd suggest your next step should be to model the shell explicitly in the design software, and then slice that (it should see these thin walls and place a single perimeter in them). In CAD, I'd create a solid body and use a 'shell' tool, instructing it to exclude the desired open faces. If you're using a surface modeller I'm not so sure - you might have a bit of a job creating offset surfaces and patching the ends.
I had a quick stab using solidworks, and although it took slic3r a while to work it out, it did produce something I think would print similarly to yours (see attached).
]]>I had no problem with my first design as the front is flat (see .jpg), but I had to change that to a sloping front (scaled down test model .stl file included)
I slice with 0 for layers and infill and 1 for perimeters.
When I slice the test .stl, slic3r automatically adds a single layer to close the front... :-(
Kind regards
Carsten
SD 4