Hi all. I am very new to the community but familiar with solid modeling with Rhino and STL in general. I've been using slic3r 0.9.9 with very thin vertical support walls 0.05 mm wide that I create as solids overlaid on the solid I am making (which I want to support). I export both objects, together, as an STL, and run them through slic3r and it works and the supports are visible in the visualby taghavi - Slic3r