diff --git a/maidroid_tool/egg_writer.lua b/maidroid_tool/egg_writer.lua
new file mode 100644
index 0000000..3b59898
--- /dev/null
+++ b/maidroid_tool/egg_writer.lua
@@ -0,0 +1,93 @@
+------------------------------------------------------------
+-- Copyright (c) 2016 tacigar. All rights reserved.
+-- https://github.com/tacigar/maidroid
+------------------------------------------------------------
+
+local dye_item_map = {
+	["dye:red"] = "maidroid:maidroid_mk1_egg",
+}
+
+local formspec = { -- want to change.
+	["inactive"] = "size[8,9]"
+		.. default.gui_bg
+		.. default.gui_bg_img
+		.. default.gui_slots
+		.. "label[3.75,0;Core]"
+		.. "list[current_name;core;3.5,0.5;1,1;]"
+		.. "label[2.75,2;Coal]"
+		.. "list[current_name;fuel;2.5,2.5;1,1;]"
+		.. "label[4.75,2;Dye]"
+		.. "list[current_name;dye;4.5,2.5;1,1;]"
+		.. "image[3.5,1.5;1,2;maidroid_tool_gui_arrow.png]"
+		.. "image[3.1,3.5;2,1;maidroid_tool_gui_meter.png^[transformR270]"
+		.. "list[current_player;main;0,5;8,1;]"
+		.. "list[current_player;main;0,6.2;8,3;8]",
+
+	["active"] = function(time)
+		local arrow_percent = (100 / 40) * time
+		local merter_percent = 0
+		if time % 16 >= 8 then
+			meter_percent = (8 - (time % 8)) * (100 / 8)
+		else
+			meter_percent = (time % 8) * (100 / 8)
+		end
+		return "size[8,9]"
+			.. default.gui_bg
+			.. default.gui_bg_img
+			.. default.gui_slots
+			.. "label[3.75,0;Core]"
+			.. "list[current_name;core;3.5,0.5;1,1;]"
+			.. "label[2.75,2;Coal]"
+			.. "list[current_name;fuel;2.5,2.5;1,1;]"
+			.. "label[4.75,2;Dye]"
+			.. "list[current_name;dye;4.5,2.5;1,1;]"
+			.. "image[3.5,1.5;1,2;maidroid_tool_gui_arrow.png^[lowpart:"
+			.. arrow_percent
+			.. ":maidroid_tool_gui_arrow_filled.png]"
+			.. "image[3.1,3.5;2,1;maidroid_tool_gui_meter.png^[lowpart:"
+			.. meter_percent
+			.. ":maidroid_tool_gui_meter_filled.png^[transformR270]"
+			.. "list[current_player;main;0,5;8,1;]"
+			.. "list[current_player;main;0,6.2;8,3;8]"
+	end,
+}
+
+local tiles = {
+	["active"] = {
+		"default:stone",
+	},
+
+	["inactive"] = {
+		"default:stone",
+	},
+}
+
+local nodebox = {
+	type = "fixed",
+	fixed = {
+		{   -0.5,  -0.375, -0.4375,     0.5,  0.3125, 0.4375},
+		{-0.4375, -0.4375,    -0.5,  0.4375,    0.25,    0.5},
+		{-0.3125,    -0.5, -0.3125,  0.3125, -0.4375, 0.3125},
+		{ -0.375,  0.3125,  -0.375, -0.3125,   0.375,  0.375},
+		{ 0.3125,  0.3125,  -0.375,   0.375,   0.375,  0.375},
+		{ -0.125,    -0.5, -0.0625,   0.125,   0.375, 0.0625},
+	},
+}
+
+local selection_box = {
+	type = "fixed",
+	fixed = {
+		{-0.4375, -0.4375, -0.4375, 0.4375, -0.4375, 0.4375},
+	},
+}
+
+maidroid_tool.register_writer("maidroid_tool:egg_writer", {
+	formspec        = formspec,
+	tiles           = tiles,
+	nodebox         = nodebox,
+	selection_box   = selection_box,
+	duration        = 30,
+	empty_itemname  = "maidroid:empty_egg",
+	dye_item_map    = dye_item_map,
+	is_mainitem     = maidroid.is_egg,
+}