If you are determined to use this mod for non-malicious purposes (like reducing wrist strain while clearing a large area of gravel), follow these safety guidelines to avoid bans:
In vanilla Minecraft, placing blocks requires a single mouse click per block. If you are building a bridge across the void in Bedwars or a tower in The Walls, you must click rapidly and aim precisely at the edge of the previous block. auto place mod 1.8.9