In this Roblox Studio guide, ... Many of the tools you use will be easier to manage if you enable the Snap to Grid option in the advanced settings. ... Fuses parts together into a single part.

Snap to Grid controls how much you can move or rotate an object at a time. By default, the move tool only allows objects to move one stud at a time. The small tiles are 4x4 and the large are 8x8, so ...