The symmetry tool debuted in v0.32 update is a great help to vanilla building. I can insert blocks into another using supports. It was a painstaking process before.
This recording is how I fix the brace overlapping glitter on my SFP-V30 with the symmetry tool.
The video editing is crap because I'm a noob.
Here's another trick. It's like doing surgery outside the body. XD
Ah, yeah, somehow missed that.
Though some people still use mods, but just to make the processes of what's possible in-game easier, but that's each to their taste ^^