How do I make a block stick to another block?

Does using glue on a block surface work? What do I have to do to make a block stick to another block without using any anchor? Im trying to make a "build a boat for treasure" type of game.

Weld the two parts together.

Example:

local part1 = workspace.Part1
local part2 = workspace.Part2

local weld = Instance.new("Weld")
weld.Part0 = part1
weld.Part1 = part2
weld.Parent = part1