diff --git a/README.md b/README.md
index 3a54599..23f7bc0 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,12 @@
 # Tube Library 2 [tubelib2]
 
+THIS MOD IS WORK IN PROGRESS !!!
+
 A library for mods which need connecting tubes / pipes / cables or similar.
 
+This mod is not useful for its own. It does not even have any nodes.
+It only comes with a few test nodes to play around with the tubing algorithm.
+
 Browse on: ![GitHub](https://github.com/joe7575/tubelib2)
 
 Download: ![GitHub](https://github.com/joe7575/tubelib2/archive/master.zip)
diff --git a/textures/tubelib2_tool.png b/textures/tubelib2_tool.png
index 1bfeab9..2ec1235 100644
Binary files a/textures/tubelib2_tool.png and b/textures/tubelib2_tool.png differ
diff --git a/tube_test.lua b/tube_test.lua
index 77d6c2a..7229990 100644
--- a/tube_test.lua
+++ b/tube_test.lua
@@ -204,5 +204,6 @@ minetest.register_node("tubelib2:tool", {
 	on_use = remove_tube,
 	on_place = repair_tubes,
 	node_placement_prediction = "",
+	stack_max = 1,
 })