Builder script

player = game.Players.LocalPlayer
mouse = player:GetMouse()

function ok(key)
	if key == "e" then
		part = Instance.new("Part",game.Workspace)
		part.Position = player.Character["Right Arm"].Position
	end
end
function Part(key)
	if key == "r" then
		anchor = Instance.new("Part",game.Workspace)
		anchor.Position = player.Character["Right Arm"].Position
		anchor.Anchored = true
	end
end

mouse.KeyDown:connect(Part)
mouse.KeyDown:connect(ok)