I use SketchUp for small models and then print in 3D.
To troubleshoot intersected in small dimensions (< 1mm), I tried to scale the largest and then reduce it to the end model (as they say on the forums) . But the problem remains the same. Because large-scale functions do well, but then there are problems to reduce error, SketchUp manages your way. Sometimes leaves gaps and I can not print.
Will they add some to work with small models ?.