Support is always on the outside of the model.
Infill is on the inside of the model.
The main difference is support should easily peel away from the model when done.
You can decrease the extrusion width of support to help with removal.
post an example .stl and I will show you (screenshot) some options.
Language barrier isn't helping but pictures work well.
Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions