I’ve tried printing it at 190Deg with PLA, and Fan running 100% (half the fan points to the heatbreak, and the other half on the model).
The problem is that the bottom sides (with supports on CURA), are terrible.
It seems it’s melting too much and hanging.
Any advice on how to fix overhang issues. The problem is especially evident when printing anything which is spherical. The bottom half of the looks like an old wrinkled lady, whereas the top half is as smooth as a baby’s bottom.
Cura’s support algorithm isn’t very good for bottom surface quality. When I want to print something like this, I switch to MatterControl. Their slicer (MatterSlice) is largely based on CuraEngine, but their support algorithm includes interface layers that, when properly configured for your printer, can result in bottom surfaces that look almost as good as the top surfaces.
For better PLA prints I use also additional area cooler (see my tip at http://www.thingiverse.com/thing:901746). I have also switched to Simplify3D because of better supports and g-code generator. Try to master your overhangs first for nice 60° angle (or better) with the test model from Make (http://www.thingiverse.com/thing:533472 – model for testing different angles of overhangs).
Slic3r also does interface layers, though I was actually getting better support performance with it (with ABS at least) before the rewrite of the support algorithm to include them.