diff --git a/mods/default/nodes.lua b/mods/default/nodes.lua
index 6b0785e..9616bad 100644
--- a/mods/default/nodes.lua
+++ b/mods/default/nodes.lua
@@ -2221,6 +2221,10 @@ function default.chest.register_chest(name, d)
 			local itemstack = player:get_wielded_item()
 			local key_meta = itemstack:get_meta()
 
+			if itemstack:get_metadata() == "" then
+				return
+			end
+
 			if key_meta:get_string("secret") == "" then
 				key_meta:set_string("secret", minetest.parse_json(itemstack:get_metadata()).secret)
 				itemstack:set_metadata("")
diff --git a/mods/default/textures/default_desert_cobble.png b/mods/default/textures/default_desert_cobble.png
index 7c9fabb..fa1af5d 100644
Binary files a/mods/default/textures/default_desert_cobble.png and b/mods/default/textures/default_desert_cobble.png differ
diff --git a/mods/default/textures/default_glass.png b/mods/default/textures/default_glass.png
index da25402..74d6a02 100644
Binary files a/mods/default/textures/default_glass.png and b/mods/default/textures/default_glass.png differ
diff --git a/mods/default/textures/default_glass_detail.png b/mods/default/textures/default_glass_detail.png
index d38dbb7..811a4db 100644
Binary files a/mods/default/textures/default_glass_detail.png and b/mods/default/textures/default_glass_detail.png differ
diff --git a/mods/default/tools.lua b/mods/default/tools.lua
index 2a84f38..f442a89 100644
--- a/mods/default/tools.lua
+++ b/mods/default/tools.lua
@@ -4,9 +4,7 @@
 minetest.register_item(":", {
 	type = "none",
 	wield_image = "wieldhand.png",
-	-- wield_scale = {x=1.5, y=2, z=1},
 	wield_scale = {x=1.3,y=1,z=5},
-	-- wield_scale = {x=1,y=1,z=2.5},
 	tool_capabilities = {
 		full_punch_interval = 0.9,
 		max_drop_level = 0,
diff --git a/mods/doors/textures/doors_door_glass.png b/mods/doors/textures/doors_door_glass.png
index 26c427b..3c205dd 100644
Binary files a/mods/doors/textures/doors_door_glass.png and b/mods/doors/textures/doors_door_glass.png differ
diff --git a/mods/doors/textures/doors_item_glass.png b/mods/doors/textures/doors_item_glass.png
index 0ed6373..49a300f 100644
Binary files a/mods/doors/textures/doors_item_glass.png and b/mods/doors/textures/doors_item_glass.png differ
diff --git a/mods/stairs/init.lua b/mods/stairs/init.lua
index ced7af2..99db950 100644
--- a/mods/stairs/init.lua
+++ b/mods/stairs/init.lua
@@ -48,7 +48,8 @@ end
 -- Register stair
 -- Node will be called stairs:stair_<subname>
 
-function stairs.register_stair(subname, recipeitem, groups, images, description, sounds)
+function stairs.register_stair(subname, recipeitem, groups, images, description,
+		sounds, worldaligntex)
 	-- Set backface culling and world-aligned textures
 	local stair_images = {}
 	for i, image in ipairs(images) do
@@ -56,14 +57,16 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
 			stair_images[i] = {
 				name = image,
 				backface_culling = true,
-				align_style = "world",
 			}
+			if worldaligntex then
+				stair_images[i].align_style = "world"
+			end
 		else
 			stair_images[i] = table.copy(image)
 			if stair_images[i].backface_culling == nil then
 				stair_images[i].backface_culling = true
 			end
-			if stair_images[i].align_style == nil then
+			if worldaligntex and stair_images[i].align_style == nil then
 				stair_images[i].align_style = "world"
 			end
 		end
@@ -140,25 +143,24 @@ function stairs.register_stair(subname, recipeitem, groups, images, description,
 end
 
 
--- Slab facedir to placement 6d matching table
-local slab_trans_dir = {[0] = 8, 0, 2, 1, 3, 4}
-
-
 -- Register slab
 -- Node will be called stairs:slab_<subname>
 
-function stairs.register_slab(subname, recipeitem, groups, images, description, sounds)
+function stairs.register_slab(subname, recipeitem, groups, images, description,
+		sounds, worldaligntex)
 	-- Set world-aligned textures
 	local slab_images = {}
 	for i, image in ipairs(images) do
 		if type(image) == "string" then
 			slab_images[i] = {
 				name = image,
-				align_style = "world",
 			}
+			if worldaligntex then
+				slab_images[i].align_style = "world"
+			end
 		else
 			slab_images[i] = table.copy(image)
-			if image.align_style == nil then
+			if worldaligntex and image.align_style == nil then
 				slab_images[i].align_style = "world"
 			end
 		end
@@ -185,33 +187,13 @@ function stairs.register_slab(subname, recipeitem, groups, images, description,
 			local creative_enabled = (creative and creative.is_enabled_for
 					and creative.is_enabled_for(player_name))
 
-			if under and under.name:find("stairs:slab_") then
+			if under and under.name:find("^stairs:slab_") then
 				-- place slab using under node orientation
 				local dir = minetest.dir_to_facedir(vector.subtract(
 					pointed_thing.above, pointed_thing.under), true)
 
 				local p2 = under.param2
 
-				-- combine two slabs if possible
-				if slab_trans_dir[math.floor(p2 / 4)] == dir
-						and wield_item == under.name then
-
-					if not recipeitem then
-						return itemstack
-					end
-					if minetest.is_protected(pointed_thing.under, player_name) and not
-							minetest.check_player_privs(player_name, "protection_bypass") then
-						minetest.record_protection_violation(pointed_thing.under,
-							player_name)
-						return
-					end
-					minetest.set_node(pointed_thing.under, {name = recipeitem, param2 = p2})
-					if not creative_enabled then
-						itemstack:take_item()
-					end
-					return itemstack
-				end
-
 				-- Placing a slab on an upside down slab should make it right-side up.
 				if p2 >= 20 and dir == 8 then
 					p2 = p2 - 20
@@ -300,7 +282,8 @@ end
 -- Register inner stair
 -- Node will be called stairs:stair_inner_<subname>
 
-function stairs.register_stair_inner(subname, recipeitem, groups, images, description, sounds)
+function stairs.register_stair_inner(subname, recipeitem, groups, images,
+		description, sounds, worldaligntex)
 	-- Set backface culling and world-aligned textures
 	local stair_images = {}
 	for i, image in ipairs(images) do
@@ -308,14 +291,16 @@ function stairs.register_stair_inner(subname, recipeitem, groups, images, descri
 			stair_images[i] = {
 				name = image,
 				backface_culling = true,
-				align_style = "world",
 			}
+			if worldaligntex then
+				stair_images[i].align_style = "world"
+			end
 		else
 			stair_images[i] = table.copy(image)
 			if stair_images[i].backface_culling == nil then
 				stair_images[i].backface_culling = true
 			end
-			if stair_images[i].align_style == nil then
+			if worldaligntex and stair_images[i].align_style == nil then
 				stair_images[i].align_style = "world"
 			end
 		end
@@ -378,7 +363,8 @@ end
 -- Register outer stair
 -- Node will be called stairs:stair_outer_<subname>
 
-function stairs.register_stair_outer(subname, recipeitem, groups, images, description, sounds)
+function stairs.register_stair_outer(subname, recipeitem, groups, images,
+		description, sounds, worldaligntex)
 	-- Set backface culling and world-aligned textures
 	local stair_images = {}
 	for i, image in ipairs(images) do
@@ -386,14 +372,16 @@ function stairs.register_stair_outer(subname, recipeitem, groups, images, descri
 			stair_images[i] = {
 				name = image,
 				backface_culling = true,
-				align_style = "world",
 			}
+			if worldaligntex then
+				stair_images[i].align_style = "world"
+			end
 		else
 			stair_images[i] = table.copy(image)
 			if stair_images[i].backface_culling == nil then
 				stair_images[i].backface_culling = true
 			end
-			if stair_images[i].align_style == nil then
+			if worldaligntex and stair_images[i].align_style == nil then
 				stair_images[i].align_style = "world"
 			end
 		end
@@ -455,11 +443,16 @@ end
 -- Stair/slab registration function.
 -- Nodes will be called stairs:{stair,slab}_<subname>
 
-function stairs.register_stair_and_slab(subname, recipeitem, groups, images, desc_stair, desc_slab, sounds)
-	stairs.register_stair(subname, recipeitem, groups, images, desc_stair, sounds)
-	stairs.register_stair_inner(subname, recipeitem, groups, images, desc_stair, sounds)
-	stairs.register_stair_outer(subname, recipeitem, groups, images, desc_stair, sounds)
-	stairs.register_slab(subname, recipeitem, groups, images, desc_slab, sounds)
+function stairs.register_stair_and_slab(subname, recipeitem, groups, images,
+		desc_stair, desc_slab, sounds, worldaligntex)
+	stairs.register_stair(subname, recipeitem, groups, images, desc_stair,
+		sounds, worldaligntex)
+	stairs.register_stair_inner(subname, recipeitem, groups, images, desc_stair,
+		sounds, worldaligntex)
+	stairs.register_stair_outer(subname, recipeitem, groups, images, desc_stair,
+		sounds, worldaligntex)
+	stairs.register_slab(subname, recipeitem, groups, images, desc_slab,
+		sounds, worldaligntex)
 end
 
 
@@ -472,7 +465,8 @@ stairs.register_stair_and_slab(
 	{"default_wood.png"},
 	"Wooden Stair",
 	"Wooden Slab",
-	default.node_sound_wood_defaults()
+	default.node_sound_wood_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -482,7 +476,8 @@ stairs.register_stair_and_slab(
 	{"default_junglewood.png"},
 	"Jungle Wood Stair",
 	"Jungle Wood Slab",
-	default.node_sound_wood_defaults()
+	default.node_sound_wood_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -492,7 +487,8 @@ stairs.register_stair_and_slab(
 	{"default_pine_wood.png"},
 	"Pine Wood Stair",
 	"Pine Wood Slab",
-	default.node_sound_wood_defaults()
+	default.node_sound_wood_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -502,7 +498,8 @@ stairs.register_stair_and_slab(
 	{"default_acacia_wood.png"},
 	"Acacia Wood Stair",
 	"Acacia Wood Slab",
-	default.node_sound_wood_defaults()
+	default.node_sound_wood_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -512,7 +509,8 @@ stairs.register_stair_and_slab(
 	{"default_aspen_wood.png"},
 	"Aspen Wood Stair",
 	"Aspen Wood Slab",
-	default.node_sound_wood_defaults()
+	default.node_sound_wood_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -522,7 +520,8 @@ stairs.register_stair_and_slab(
 	{"default_stone.png"},
 	"Stone Stair",
 	"Stone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -532,7 +531,8 @@ stairs.register_stair_and_slab(
 	{"default_cobble.png"},
 	"Cobblestone Stair",
 	"Cobblestone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -542,7 +542,8 @@ stairs.register_stair_and_slab(
 	{"default_mossycobble.png"},
 	"Mossy Cobblestone Stair",
 	"Mossy Cobblestone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -552,7 +553,8 @@ stairs.register_stair_and_slab(
 	{"default_stone_brick.png"},
 	"Stone Brick Stair",
 	"Stone Brick Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -562,7 +564,8 @@ stairs.register_stair_and_slab(
 	{"default_stone_block.png"},
 	"Stone Block Stair",
 	"Stone Block Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -572,7 +575,8 @@ stairs.register_stair_and_slab(
 	{"default_desert_stone.png"},
 	"Desert Stone Stair",
 	"Desert Stone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -582,7 +586,8 @@ stairs.register_stair_and_slab(
 	{"default_desert_cobble.png"},
 	"Desert Cobblestone Stair",
 	"Desert Cobblestone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -592,7 +597,8 @@ stairs.register_stair_and_slab(
 	{"default_desert_stone_brick.png"},
 	"Desert Stone Brick Stair",
 	"Desert Stone Brick Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -602,7 +608,8 @@ stairs.register_stair_and_slab(
 	{"default_desert_stone_block.png"},
 	"Desert Stone Block Stair",
 	"Desert Stone Block Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -612,7 +619,8 @@ stairs.register_stair_and_slab(
 	{"default_sandstone.png"},
 	"Sandstone Stair",
 	"Sandstone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -622,7 +630,8 @@ stairs.register_stair_and_slab(
 	{"default_sandstone_brick.png"},
 	"Sandstone Brick Stair",
 	"Sandstone Brick Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -632,7 +641,8 @@ stairs.register_stair_and_slab(
 	{"default_sandstone_block.png"},
 	"Sandstone Block Stair",
 	"Sandstone Block Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -642,7 +652,8 @@ stairs.register_stair_and_slab(
 	{"default_desert_sandstone.png"},
 	"Desert Sandstone Stair",
 	"Desert Sandstone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -652,7 +663,8 @@ stairs.register_stair_and_slab(
 	{"default_desert_sandstone_brick.png"},
 	"Desert Sandstone Brick Stair",
 	"Desert Sandstone Brick Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -662,7 +674,8 @@ stairs.register_stair_and_slab(
 	{"default_desert_sandstone_block.png"},
 	"Desert Sandstone Block Stair",
 	"Desert Sandstone Block Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -672,7 +685,8 @@ stairs.register_stair_and_slab(
 	{"default_silver_sandstone.png"},
 	"Silver Sandstone Stair",
 	"Silver Sandstone Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -682,7 +696,8 @@ stairs.register_stair_and_slab(
 	{"default_silver_sandstone_brick.png"},
 	"Silver Sandstone Brick Stair",
 	"Silver Sandstone Brick Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -692,7 +707,8 @@ stairs.register_stair_and_slab(
 	{"default_silver_sandstone_block.png"},
 	"Silver Sandstone Block Stair",
 	"Silver Sandstone Block Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -702,7 +718,8 @@ stairs.register_stair_and_slab(
 	{"default_obsidian.png"},
 	"Obsidian Stair",
 	"Obsidian Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -712,7 +729,8 @@ stairs.register_stair_and_slab(
 	{"default_obsidian_brick.png"},
 	"Obsidian Brick Stair",
 	"Obsidian Brick Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -722,7 +740,8 @@ stairs.register_stair_and_slab(
 	{"default_obsidian_block.png"},
 	"Obsidian Block Stair",
 	"Obsidian Block Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -732,7 +751,8 @@ stairs.register_stair_and_slab(
 	{"default_brick.png"},
 	"Brick Stair",
 	"Brick Slab",
-	default.node_sound_stone_defaults()
+	default.node_sound_stone_defaults(),
+	false
 )
 
 stairs.register_stair_and_slab(
@@ -742,7 +762,8 @@ stairs.register_stair_and_slab(
 	{"default_steel_block.png"},
 	"Steel Block Stair",
 	"Steel Block Slab",
-	default.node_sound_metal_defaults()
+	default.node_sound_metal_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -752,7 +773,8 @@ stairs.register_stair_and_slab(
 	{"default_tin_block.png"},
 	"Tin Block Stair",
 	"Tin Block Slab",
-	default.node_sound_metal_defaults()
+	default.node_sound_metal_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -762,7 +784,8 @@ stairs.register_stair_and_slab(
 	{"default_copper_block.png"},
 	"Copper Block Stair",
 	"Copper Block Slab",
-	default.node_sound_metal_defaults()
+	default.node_sound_metal_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -772,7 +795,8 @@ stairs.register_stair_and_slab(
 	{"default_bronze_block.png"},
 	"Bronze Block Stair",
 	"Bronze Block Slab",
-	default.node_sound_metal_defaults()
+	default.node_sound_metal_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -782,7 +806,8 @@ stairs.register_stair_and_slab(
 	{"default_gold_block.png"},
 	"Gold Block Stair",
 	"Gold Block Slab",
-	default.node_sound_metal_defaults()
+	default.node_sound_metal_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -792,7 +817,8 @@ stairs.register_stair_and_slab(
 	{"default_ice.png"},
 	"Ice Stair",
 	"Ice Slab",
-	default.node_sound_glass_defaults()
+	default.node_sound_glass_defaults(),
+	true
 )
 
 stairs.register_stair_and_slab(
@@ -802,5 +828,100 @@ stairs.register_stair_and_slab(
 	{"default_snow.png"},
 	"Snow Block Stair",
 	"Snow Block Slab",
-	default.node_sound_snow_defaults()
+	default.node_sound_snow_defaults(),
+	true
+)
+
+-- Glass stair nodes need to be registered individually to utilize specialized textures.
+
+stairs.register_stair(
+	"glass",
+	"default:glass",
+	{cracky = 3},
+	{"stairs_glass_split.png", "default_glass.png",
+	"stairs_glass_stairside.png^[transformFX", "stairs_glass_stairside.png",
+	"default_glass.png", "stairs_glass_split.png"},
+	"Glass Stair",
+	default.node_sound_glass_defaults(),
+	false
+)
+
+stairs.register_slab(
+	"glass",
+	"default:glass",
+	{cracky = 3},
+	{"default_glass.png", "default_glass.png", "stairs_glass_split.png"},
+	"Glass Slab",
+	default.node_sound_glass_defaults(),
+	false
+)
+
+stairs.register_stair_inner(
+	"glass",
+	"default:glass",
+	{cracky = 3},
+	{"stairs_glass_stairside.png^[transformR270", "default_glass.png",
+	"stairs_glass_stairside.png^[transformFX", "default_glass.png",
+	"default_glass.png", "stairs_glass_stairside.png"},
+	"Glass Inner Stair",
+	default.node_sound_glass_defaults(),
+	false
+)
+
+stairs.register_stair_outer(
+	"glass",
+	"default:glass",
+	{cracky = 3},
+	{"stairs_glass_stairside.png^[transformR90", "default_glass.png",
+	"stairs_glass_outer_stairside.png", "stairs_glass_stairside.png",
+	"stairs_glass_stairside.png^[transformR90","stairs_glass_outer_stairside.png"},
+	"Glass Outer Stair",
+	default.node_sound_glass_defaults(),
+	false
+)
+
+stairs.register_stair(
+	"obsidian_glass",
+	"default:obsidian_glass",
+	{cracky = 3},
+	{"stairs_obsidian_glass_split.png", "default_obsidian_glass.png",
+	"stairs_obsidian_glass_stairside.png^[transformFX", "stairs_obsidian_glass_stairside.png",
+	"default_obsidian_glass.png", "stairs_obsidian_glass_split.png"},
+	"Obsidian Glass Stair",
+	default.node_sound_glass_defaults(),
+	false
+)
+
+stairs.register_slab(
+	"obsidian_glass",
+	"default:obsidian_glass",
+	{cracky = 3},
+	{"default_obsidian_glass.png", "default_obsidian_glass.png", "stairs_obsidian_glass_split.png"},
+	"Obsidian Glass Slab",
+	default.node_sound_glass_defaults(),
+	false
+)
+
+stairs.register_stair_inner(
+	"obsidian_glass",
+	"default:obsidian_glass",
+	{cracky = 3},
+	{"stairs_obsidian_glass_stairside.png^[transformR270", "default_obsidian_glass.png",
+	"stairs_obsidian_glass_stairside.png^[transformFX", "default_obsidian_glass.png",
+	"default_obsidian_glass.png", "stairs_obsidian_glass_stairside.png"},
+	"Obsidian Glass Inner Stair",
+	default.node_sound_glass_defaults(),
+	false
+)
+
+stairs.register_stair_outer(
+	"obsidian_glass",
+	"default:obsidian_glass",
+	{cracky = 3},
+	{"stairs_obsidian_glass_stairside.png^[transformR90", "default_obsidian_glass.png",
+	"stairs_obsidian_glass_outer_stairside.png", "stairs_obsidian_glass_stairside.png",
+	"stairs_obsidian_glass_stairside.png^[transformR90","stairs_obsidian_glass_outer_stairside.png"},
+	"Obsidian Glass Outer Stair",
+	default.node_sound_glass_defaults(),
+	false
 )
\ No newline at end of file
diff --git a/mods/stairs/models/stairs_stair.obj b/mods/stairs/models/stairs_stair.obj
deleted file mode 100644
index 198edf6..0000000
--- a/mods/stairs/models/stairs_stair.obj
+++ /dev/null
@@ -1,115 +0,0 @@
-# Blender v2.72 (sub 0) OBJ File: ''
-# www.blender.org
-mtllib stairs.mtl
-o stairs_top
-v -0.500000 0.000000 -0.500000
-v -0.500000 0.000000 0.000000
-v 0.500000 0.000000 0.000000
-v 0.500000 0.000000 -0.500000
-v -0.500000 0.500000 0.000000
-v 0.500000 0.500000 0.000000
-v -0.500000 0.500000 0.500000
-v 0.500000 0.500000 0.500000
-vt 0.000000 0.000000
-vt 1.000000 0.000000
-vt 1.000000 0.500000
-vt 0.000000 0.500000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vn 0.000000 1.000000 0.000000
-g stairs_top
-usemtl None
-s off
-f 4/1/1 1/2/1 2/3/1 3/4/1
-f 7/5/1 8/6/1 6/4/1 5/3/1
-o stairs_bottom
-v -0.500000 -0.500000 -0.500000
-v 0.500000 -0.500000 -0.500000
-v -0.500000 -0.500000 0.500000
-v 0.500000 -0.500000 0.500000
-vt 1.000000 0.000000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vt 0.000000 0.000000
-vn 0.000000 -1.000000 -0.000000
-g stairs_bottom
-usemtl None
-s off
-f 11/7/2 9/8/2 10/9/2 12/10/2
-o stairs_right
-v -0.500000 0.000000 -0.500000
-v -0.500000 -0.500000 -0.500000
-v -0.500000 0.000000 0.000000
-v -0.500000 -0.500000 0.500000
-v -0.500000 0.500000 0.000000
-v -0.500000 0.500000 0.500000
-vt 0.000000 0.500000
-vt 0.000000 0.000000
-vt 0.500000 0.500000
-vt 1.000000 1.000000
-vt 0.500000 1.000000
-vt 1.000000 0.000000
-vn -1.000000 0.000000 0.000000
-g stairs_right
-usemtl None
-s off
-f 13/11/3 14/12/3 15/13/3
-f 15/13/3 18/14/3 17/15/3
-f 14/12/3 16/16/3 15/13/3
-f 16/16/3 18/14/3 15/13/3
-o stairs_left
-v 0.500000 0.000000 0.000000
-v 0.500000 -0.500000 -0.500000
-v 0.500000 0.000000 -0.500000
-v 0.500000 -0.500000 0.500000
-v 0.500000 0.500000 0.000000
-v 0.500000 0.500000 0.500000
-vt 0.500000 0.500000
-vt 1.000000 0.000000
-vt 1.000000 0.500000
-vt 0.500000 1.000000
-vt 0.000000 1.000000
-vt 0.000000 0.000000
-vn 1.000000 0.000000 0.000000
-g stairs_left
-usemtl None
-s off
-f 19/17/4 20/18/4 21/19/4
-f 19/17/4 23/20/4 24/21/4
-f 20/18/4 19/17/4 22/22/4
-f 19/17/4 24/21/4 22/22/4
-o stairs_back
-v -0.500000 -0.500000 0.500000
-v 0.500000 -0.500000 0.500000
-v -0.500000 0.500000 0.500000
-v 0.500000 0.500000 0.500000
-vt 1.000000 0.000000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vt 0.000000 0.000000
-vn 0.000000 -0.000000 1.000000
-g stairs_back
-usemtl None
-s off
-f 26/23/5 28/24/5 27/25/5 25/26/5
-o stairs_front
-v -0.500000 0.000000 -0.500000
-v -0.500000 -0.500000 -0.500000
-v -0.500000 0.000000 0.000000
-v 0.500000 0.000000 0.000000
-v 0.500000 -0.500000 -0.500000
-v 0.500000 0.000000 -0.500000
-v -0.500000 0.500000 0.000000
-v 0.500000 0.500000 0.000000
-vt 1.000000 0.000000
-vt 1.000000 0.500000
-vt 0.000000 0.500000
-vt 0.000000 0.000000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vn 0.000000 0.000000 -1.000000
-g stairs_front
-usemtl None
-s off
-f 30/27/6 29/28/6 34/29/6 33/30/6
-f 31/28/6 35/31/6 36/32/6 32/29/6
diff --git a/mods/stairs/models/stairs_stair_inner.obj b/mods/stairs/models/stairs_stair_inner.obj
deleted file mode 100644
index 5e4968e..0000000
--- a/mods/stairs/models/stairs_stair_inner.obj
+++ /dev/null
@@ -1,161 +0,0 @@
-# Blender v2.78 (sub 0) OBJ File: ''
-# www.blender.org
-mtllib stairs_inner_stair.mtl
-o stairs_back_right_stairs_back.001
-v 0.500000 -0.500000 0.500000
-v 0.500000 0.500000 0.500000
-v -0.500000 0.500000 0.500000
-v -0.500000 -0.500000 0.500000
-vt 1.0000 0.0000
-vt 1.0000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.0000
-vn 0.0000 -0.0000 1.0000
-usemtl None.001
-s 1
-f 1/1/1 2/2/1 3/3/1 4/4/1
-o stairs_front_right_stairs_back.003
-v 0.000000 0.000000 -0.500000
-v 0.000000 0.000000 0.000000
-v 0.000000 0.500000 0.000000
-v 0.000000 0.500000 -0.500000
-v -0.500000 0.000000 -0.500000
-v -0.500000 -0.500000 -0.500000
-v -0.500000 0.000000 0.000000
-v -0.500000 0.500000 0.500000
-v -0.500000 0.500000 0.000000
-v -0.500000 -0.500000 0.500000
-vt 0.0000 0.5000
-vt 0.5000 0.5000
-vt 0.5000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.5000
-vt 0.0000 0.0000
-vt 0.5000 0.5000
-vt 1.0000 1.0000
-vt 0.5000 1.0000
-vt 1.0000 0.0000
-vn -1.0000 0.0000 0.0000
-usemtl None
-s 1
-f 5/5/2 6/6/2 7/7/2 8/8/2
-f 9/9/2 10/10/2 11/11/2
-f 11/11/2 12/12/2 13/13/2
-f 10/10/2 14/14/2 11/11/2
-f 14/14/2 12/12/2 11/11/2
-o stairs_bottom
-v -0.500000 -0.500000 0.500000
-v -0.500000 -0.500000 -0.500000
-v 0.500000 -0.500000 -0.500000
-v 0.500000 -0.500000 0.500000
-vt 1.0000 0.0000
-vt 1.0000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.0000
-vn 0.0000 -1.0000 -0.0000
-usemtl None
-s 1
-f 15/15/3 16/16/3 17/17/3 18/18/3
-o stairs_front_left_stairs_front.002
-v -0.500000 0.000000 0.000000
-v -0.500000 0.500000 0.000000
-v 0.000000 0.500000 0.000000
-v 0.000000 0.000000 0.000000
-v -0.500000 -0.500000 -0.500000
-v -0.500000 0.000000 -0.500000
-v 0.500000 0.000000 -0.500000
-v 0.500000 -0.500000 -0.500000
-v 0.000000 0.000000 -0.500000
-v 0.000000 0.500000 -0.500000
-v 0.500000 0.500000 -0.500000
-v 0.500000 0.000000 -0.500000
-vt 1.0000 0.5000
-vt 1.0000 1.0000
-vt 0.5000 1.0000
-vt 0.5000 0.5000
-vt 1.0000 0.0000
-vt 1.0000 0.5000
-vt 0.0000 0.5000
-vt 0.0000 0.0000
-vt 0.5000 0.5000
-vt 0.5000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.5000
-vn 0.0000 0.0000 -1.0000
-usemtl None
-s 1
-f 19/19/4 20/20/4 21/21/4 22/22/4
-f 23/23/4 24/24/4 25/25/4 26/26/4
-f 27/27/4 28/28/4 29/29/4 30/30/4
-o stairs_top_stairs_top.001
-v 0.000000 0.000000 -0.500000
-v -0.500000 0.000000 -0.500000
-v -0.500000 0.000000 0.000000
-v 0.000000 0.000000 0.000000
-v 0.500000 0.500000 -0.500000
-v 0.000000 0.500000 -0.500000
-v 0.000000 0.500000 0.000000
-v 0.500000 0.500000 0.000000
-v -0.500000 0.500000 0.500000
-v 0.500000 0.500000 0.500000
-v 0.500000 0.500000 0.000000
-v -0.500000 0.500000 0.000000
-vt 0.5000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.5000
-vt 0.5000 0.5000
-vt 1.0000 1.0000
-vt 0.5000 1.0000
-vt 0.5000 0.5000
-vt 1.0000 0.5000
-vt 0.0000 0.0000
-vt 1.0000 0.0000
-vt 1.0000 0.5000
-vt 0.0000 0.5000
-vn 0.0000 1.0000 0.0000
-usemtl None
-s 1
-f 31/31/5 32/32/5 33/33/5 34/34/5
-f 35/35/5 36/36/5 37/37/5 38/38/5
-f 39/39/5 40/40/5 41/41/5 42/42/5
-o stairs_back_left_stairs_back.005
-v 0.500000 0.000000 -0.500000
-v 0.500000 0.500000 -0.500000
-v 0.500000 0.500000 0.000000
-v 0.500000 0.000000 0.000000
-v 0.500000 0.000000 0.000000
-v 0.500000 0.500000 0.000000
-v 0.500000 0.500000 0.500000
-v 0.500000 -0.000000 0.500000
-v 0.500000 -0.500000 -0.500000
-v 0.500000 0.000000 -0.500000
-v 0.500000 0.000000 0.000000
-v 0.500000 -0.500000 -0.000000
-v 0.500000 -0.500000 -0.000000
-v 0.500000 0.000000 0.000000
-v 0.500000 -0.000000 0.500000
-v 0.500000 -0.500000 0.500000
-vt 0.5000 0.5000
-vt 0.5000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.5000
-vt 1.0000 0.0000
-vt 1.0000 0.5000
-vt 0.5000 0.5000
-vt 0.5000 0.0000
-vt 0.5000 0.0000
-vt 0.5000 0.5000
-vt 0.0000 0.5000
-vt 0.0000 0.0000
-vt 1.0000 0.5000
-vt 1.0000 1.0000
-vt 0.5000 1.0000
-vt 0.5000 0.5000
-vn 1.0000 0.0000 0.0000
-usemtl None
-s 1
-f 47/43/6 48/44/6 49/45/6 50/46/6
-f 51/47/6 52/48/6 53/49/6 54/50/6
-f 55/51/6 56/52/6 57/53/6 58/54/6
-usemtl None.002
-f 43/55/6 44/56/6 45/57/6 46/58/6
diff --git a/mods/stairs/models/stairs_stair_outer.obj b/mods/stairs/models/stairs_stair_outer.obj
deleted file mode 100644
index cc1975b..0000000
--- a/mods/stairs/models/stairs_stair_outer.obj
+++ /dev/null
@@ -1,136 +0,0 @@
-# Blender v2.78 (sub 0) OBJ File: ''
-# www.blender.org
-mtllib stairs_outer_stair.mtl
-o stairs_bottom
-v -0.500000 -0.500000 0.500000
-v -0.500000 -0.500000 -0.500000
-v 0.500000 -0.500000 -0.500000
-v 0.500000 -0.500000 0.500000
-vt 1.0000 0.0000
-vt 1.0000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.0000
-vn 0.0000 -1.0000 -0.0000
-usemtl None
-s 1
-f 1/1/1 2/2/1 3/3/1 4/4/1
-o stairs_back_left_stairs_left
-v 0.500000 0.000000 0.000000
-v 0.500000 -0.500000 -0.500000
-v 0.500000 0.000000 -0.500000
-v 0.500000 0.500000 0.000000
-v 0.500000 0.500000 0.500000
-v 0.500000 -0.500000 0.500000
-vt 0.5000 0.5000
-vt 1.0000 0.0000
-vt 1.0000 0.5000
-vt 0.5000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.0000
-vn 1.0000 0.0000 0.0000
-usemtl None
-s 1
-f 5/5/2 6/6/2 7/7/2
-f 5/5/2 8/8/2 9/9/2
-f 6/6/2 5/5/2 10/10/2
-f 5/5/2 9/9/2 10/10/2
-o stairs_back_right_stairs_back
-v 0.000000 -0.500000 0.500000
-v 0.000000 -0.000000 0.500000
-v -0.500000 -0.000000 0.500000
-v -0.500000 -0.500000 0.500000
-v 0.500000 -0.500000 0.500000
-v 0.500000 -0.000000 0.500000
-v 0.500000 0.500000 0.500000
-v 0.000000 0.500000 0.500000
-vt 0.5000 0.0000
-vt 0.5000 0.5000
-vt 0.0000 0.5000
-vt 0.0000 0.0000
-vt 1.0000 0.0000
-vt 1.0000 0.5000
-vt 1.0000 1.0000
-vt 0.5000 1.0000
-vn 0.0000 -0.0000 1.0000
-usemtl None
-s 1
-f 11/11/3 12/12/3 13/13/3 14/14/3
-f 15/15/3 16/16/3 12/12/3 11/11/3
-f 16/16/3 17/17/3 18/18/3 12/12/3
-o stairs_top_stairs_top.001
-v 0.000000 0.500000 0.500000
-v 0.501689 0.500000 0.500000
-v 0.501689 0.500000 0.000000
-v 0.000000 0.500000 0.000000
-v -0.500000 -0.000000 0.500000
-v 0.001689 -0.000000 0.500000
-v 0.001689 0.000000 0.000000
-v -0.500000 0.000000 0.000000
-v 0.500000 0.000000 -0.500000
-v -0.500000 0.000000 -0.500000
-v -0.500000 0.000000 0.000000
-v 0.500000 0.000000 0.000000
-vt 0.5000 0.0000
-vt 1.0000 0.0000
-vt 1.0000 0.5000
-vt 0.5000 0.5000
-vt 0.0000 0.0000
-vt 0.5000 0.0000
-vt 0.5000 0.5000
-vt 0.0000 0.5000
-vt 1.0000 1.0000
-vt 0.0000 1.0000
-vt 0.0000 0.5000
-vt 1.0000 0.5000
-vn 0.0000 1.0000 0.0000
-usemtl None
-s 1
-f 19/19/4 20/20/4 21/21/4 22/22/4
-usemtl None.004
-f 23/23/4 24/24/4 25/25/4 26/26/4
-f 27/27/4 28/28/4 29/29/4 30/30/4
-o stairs_front_left_stairs_front.000
-v -0.500000 -0.500000 -0.500000
-v -0.500000 0.000000 -0.500000
-v 0.500000 0.000000 -0.500000
-v 0.500000 -0.500000 -0.500000
-v 0.500000 0.500000 0.000000
-v 0.500000 0.000000 0.000000
-v 0.000000 0.000000 0.000000
-v 0.000000 0.500000 0.000000
-vt 1.0000 0.0000
-vt 1.0000 0.5000
-vt -0.0000 0.5000
-vt -0.0000 0.0000
-vt 0.5000 0.5000
-vt 0.5000 1.0000
-vt -0.0000 1.0000
-vt -0.0000 0.5000
-vn 0.0000 0.0000 -1.0000
-usemtl None.001
-s 1
-f 31/31/5 32/32/5 33/33/5 34/34/5
-usemtl None.003
-f 37/35/5 38/36/5 35/37/5 36/38/5
-o stairs_front_right_stairs_right.001_stairs_front_left_stairs_front.002
-v -0.500000 -0.500000 0.500000
-v -0.500000 0.000000 0.500000
-v -0.500000 0.000000 -0.500000
-v -0.500000 -0.500000 -0.500000
-v 0.000000 0.000000 0.500000
-v 0.000000 0.500000 0.500000
-v 0.000000 0.500000 -0.000000
-v -0.000000 0.000000 0.000000
-vt 1.0000 0.0000
-vt 1.0000 0.5021
-vt -0.0000 0.5021
-vt -0.0000 0.0000
-vt 1.0000 0.5021
-vt 1.0000 1.0000
-vt 0.5000 1.0000
-vt 0.5000 0.5021
-vn -1.0000 0.0000 0.0000
-usemtl None.002
-s 1
-f 39/39/6 40/40/6 41/41/6 42/42/6
-f 43/43/6 44/44/6 45/45/6 46/46/6
diff --git a/mods/stairs/textures/stairs_glass_outer_stairside.png b/mods/stairs/textures/stairs_glass_outer_stairside.png
new file mode 100644
index 0000000..9b298c8
Binary files /dev/null and b/mods/stairs/textures/stairs_glass_outer_stairside.png differ
diff --git a/mods/stairs/textures/stairs_glass_split.png b/mods/stairs/textures/stairs_glass_split.png
new file mode 100644
index 0000000..6287959
Binary files /dev/null and b/mods/stairs/textures/stairs_glass_split.png differ
diff --git a/mods/stairs/textures/stairs_glass_stairside.png b/mods/stairs/textures/stairs_glass_stairside.png
new file mode 100644
index 0000000..c424294
Binary files /dev/null and b/mods/stairs/textures/stairs_glass_stairside.png differ
diff --git a/mods/stairs/textures/stairs_obsidian_glass_outer_stairside.png b/mods/stairs/textures/stairs_obsidian_glass_outer_stairside.png
new file mode 100644
index 0000000..979f11e
Binary files /dev/null and b/mods/stairs/textures/stairs_obsidian_glass_outer_stairside.png differ
diff --git a/mods/stairs/textures/stairs_obsidian_glass_split.png b/mods/stairs/textures/stairs_obsidian_glass_split.png
new file mode 100644
index 0000000..7647b9b
Binary files /dev/null and b/mods/stairs/textures/stairs_obsidian_glass_split.png differ
diff --git a/mods/stairs/textures/stairs_obsidian_glass_stairside.png b/mods/stairs/textures/stairs_obsidian_glass_stairside.png
new file mode 100644
index 0000000..a117cdd
Binary files /dev/null and b/mods/stairs/textures/stairs_obsidian_glass_stairside.png differ
diff --git a/mods/xpanes/textures/xpanes_edge.png b/mods/xpanes/textures/xpanes_edge.png
index 92f78a1..5768d66 100644
Binary files a/mods/xpanes/textures/xpanes_edge.png and b/mods/xpanes/textures/xpanes_edge.png differ