How would i make a placement grid?

I'm making a build tool that creates parts wherever you click in the world. Thes script makes the parts do not pass trough each other, but, sometimes,if you put a part between two parts that are so together the part will pass through the other parts and i'd like to know how to make a placement grid to make the parts line up.

Here's a picture to help you understand my problem.

https://ibb.co/jb6KaU

Here's the scripts.

-- Local script in the tool 

local Event = game:GetService("ReplicatedStorage"):WaitForChild("PartsFromTool")
local equipped = false

script.Parent.Equipped:Connect(function(mouse)
	
	equipped = true

	game:GetService("UserInputService").InputBegan:Connect(function(input, g)
	
		if (equipped == true) then
	
			if (input.UserInputType == Enum.UserInputType.MouseButton1) then
				
				local position = mouse.Hit
				
				Event:FireServer(position)
		
			end
	
		end
	
	end)
	
end)

script.Parent.Unequipped:Connect(function()
	
	equipped = false
	
end)	

-- Server Script in ServerScriptService

game:GetService("ReplicatedStorage"):WaitForChild("PartsFromTool").OnServerEvent:Connect(function(player, position)
	
	local PCreated = Instance.new("Part")
	PCreated.Parent = game.Workspace
	PCreated.Size = Vector3.new(3, 3, 3)
	PCreated.Material = "Brick"
	PCreated.BrickColor = BrickColor.new("Persimmon")
	PCreated.CFrame = CFrame.new(position.Position) * CFrame.Angles(0, 0, 0)
	wait(0.001)
	PCreated.Anchored = true
	PCreated.CFrame = CFrame.new(PCreated.Position) * CFrame.Angles(0, 0, 0)
	
end)