Okay, when i try to make stairs for buildings in my game (Onarx), they’re always too big 
(i model with Blender) i’ve tried making them small, but when i import them into unity, they’re too big, if i make them much smaller it would take probably an hour, depending on how many steps.
More info please.
uhhh, be more specific… “More info please.” what more info?
are you having troubles with setting the scale import value from fbx importer in unity ?
OOOHHHH, i think i figured it out 
size the building and THEN make the stairs 
fine!, maybe you want to do all the building inside elements (statics) all together in 3d modeler and then export only one big mesh, then apply a mesh collider or box collider separately that works fine 