diff --git a/worldeditadditions_core/init.lua b/worldeditadditions_core/init.lua
index 6274a8f..d2463ef 100644
--- a/worldeditadditions_core/init.lua
+++ b/worldeditadditions_core/init.lua
@@ -30,6 +30,7 @@ wea_c.Set = dofile(wea_c.modpath.."/utils/set.lua")
 wea_c.Vector3 = dofile(wea_c.modpath.."/utils/vector3.lua")
 wea_c.Mesh, wea_c.Face = dofile(wea_c.modpath.."/utils/mesh.lua")
 wea_c.rotation = dofile(wea_c.modpath .. "/utils/rotation.lua")
+wea_c.orientation = dofile(wea_c.modpath .. "/utils/orientation.lua")
 wea_c.param2 = dofile(wea_c.modpath .. "/utils/param2.lua")
 
 wea_c.Queue = dofile(wea_c.modpath.."/utils/queue.lua")
diff --git a/worldeditadditions_core/utils/orientation.lua b/worldeditadditions_core/utils/orientation.lua
new file mode 100644
index 0000000..491670c
--- /dev/null
+++ b/worldeditadditions_core/utils/orientation.lua
@@ -0,0 +1,72 @@
+
+
+-- This file is based on code from the screwdriver2 mod and a forum post on the Minetest forums. By @12Me21 and @khonkhortisan
+-- Edited by @sbrl
+-- Ref https://github.com/12Me21/screwdriver2/blob/master/init.lua#L75-L79
+-- Ref https://forum.minetest.net/viewtopic.php?p=73195&sid=1d2d2e4e76ce2ef9c84646481a4b84bc#p73195
+
+local facedir_cycles = {
+	x = { { 12, 13, 14, 15 }, { 16, 19, 18, 17 }, { 0, 4, 22, 8 }, { 1, 5, 23, 9 }, { 2, 6, 20, 10 }, { 3, 7, 21, 11 } },
+	y = { { 0, 1, 2, 3 }, { 20, 23, 22, 21 }, { 4, 13, 10, 19 }, { 8, 17, 6, 15 }, { 12, 9, 18, 7 }, { 16, 5, 14, 11 } },
+	z = { { 4, 5, 6, 7 }, { 8, 11, 10, 9 }, { 0, 16, 20, 12 }, { 1, 17, 21, 13 }, { 2, 18, 22, 14 }, { 3, 19, 23, 15 } },
+}
+local wallmounted_cycles = {
+	x = { 0, 4, 1, 5 },
+	y = { 4, 2, 5, 3 },
+	z = { 0, 3, 1, 2 },
+}
+
+-- We have standardised on radians for other rotation operations, so it wouldn't make sense for the API-facing functions in this file to use a number of times or degrees, as this would be inconsistent
+function convert_normalise_rad(rad)
+	local deg = math.deg(rad)
+	local times = worldeditadditions_core.round(deg / 90)
+	return math.floor(times) -- ensure it's an integer and not e.g. a float 1.0
+end
+
+--- Functions to rotate a facedir/wallmounted value around an axis by a certain amount
+-- 
+-- Code lifted from @12Me21 and @khonkhortisan
+-- 
+-- Ref <https://github.com/12Me21/screwdriver2/blob/master/init.lua#L75-L79> and <https://forum.minetest.net/viewtopic.php?p=73195&sid=1d2d2e4e76ce2ef9c84646481a4b84bc#p73195>
+-- @namespace worldeditadditions_core.orientation
+local orientation = {
+	--- Facedir: lower 5 bits used for direction, 0 - 23
+	-- @param	param2	number	`param2` value to rotate.
+	-- @param	axis	string	The name of the axis to rotate around. Valid values: `x`, `y`, `z`
+	-- @param	amount	The number of radians to rotate around the given `axis`. Only right angles are supported (i.e. 90° increments). Any value that isn't a 90° increment will be **rounded**!
+	-- @returns	number	A new param2 value that is rotated the given number of degrees around the given `axis`
+	facedir = function(param2, axis, amount_rad)
+		local amount = convert_normalise_rad(amount_rad)
+		print("DEBUG:core/orientation:facedir AMOUNT rad "..tostring(amount_rad).." norm "..tostring(amount))
+		local facedir = param2 % 32
+		for _, cycle in ipairs(facedir_cycles[axis]) do
+			-- Find the current facedir
+			-- Minetest adds table.indexof, but I refuse to use it because it returns -1 rather than nil
+			for i, fd in ipairs(cycle) do
+				if fd == facedir then
+					return param2 - facedir + cycle[1 + (i - 1 + amount) % 4] -- If only Lua didn't use 1 indexing...
+				end
+			end
+		end
+		return param2
+	end,
+	-- Wallmounted: lower 3 bits used, 0 - 5
+	wallmounted = function(param2, axis, amount_rad)
+		local amount = convert_normalise_rad(amount_rad)
+		print("DEBUG:core/orientation:wallmounted AMOUNT rad " .. tostring(amount_rad) .. " norm " .. tostring(amount))
+		
+		local wallmounted = param2 % 8
+		for i, wm in ipairs(wallmounted_cycles[axis]) do
+			if wm == wallmounted then
+				return param2 - wallmounted + wallmounted_cycles[axis][1 + (i - 1 + amount) % 4]
+			end
+		end
+		return param2
+	end
+}
+-- From the original codebase (linked above):
+--orientation.colorfacedir = orientation.facedir
+--orientation.colorwallmounted = orientation.wallmounted
+-- ...we'll need to know this later
+
+return orientation