I use the Progrids unity asset which is an official unity asset to assemble these models into complete gameobjects in unity, it allows snapping to grids of any size.
https://assetstore.unity.com/packages/tools/modeling/progrids-111425
I use the Progrids unity asset which is an official unity asset to assemble these models into complete gameobjects in unity, it allows snapping to grids of any size.
https://assetstore.unity.com/packages/tools/modeling/progrids-111425