diff --git a/basic_machines/consumer.lua b/basic_machines/consumer.lua
index 7629152..85a8c07 100644
--- a/basic_machines/consumer.lua
+++ b/basic_machines/consumer.lua
@@ -201,7 +201,6 @@ function techage.register_consumer(base_name, inv_name, tiles, tNode, validState
 			end
 			
 			local tubelib2_on_update2 = function(pos, outdir, tlib2, node) 
-				print("tubelib2_on_update2", tlib2.tube_type)
 				if tlib2.tube_type == "pipe2" then
 					liquid.update_network(pos, outdir, tlib2)
 				else
diff --git a/basic_machines/grinder.lua b/basic_machines/grinder.lua
index 77f07bf..4ad5121 100644
--- a/basic_machines/grinder.lua
+++ b/basic_machines/grinder.lua
@@ -298,7 +298,3 @@ techage.add_grinder_recipe({input="default:jungletree", output="default:junglele
 techage.add_grinder_recipe({input="default:pine_tree", output="default:pine_needles 8"})
 techage.add_grinder_recipe({input="default:acacia_tree", output="default:acacia_leaves 8"})
 techage.add_grinder_recipe({input="default:aspen_tree", output="default:aspen_leaves 8"})
-
-
-local ndef = minetest.registered_nodes["techage:ta2_grinder_pas"] or {}
-print("techage:ta2_grinder_pas", dump(ndef.tubelib2_on_update2))
diff --git a/basis/networks.lua b/basis/networks.lua
index b991a3f..380c7ed 100644
--- a/basis/networks.lua
+++ b/basis/networks.lua
@@ -141,13 +141,11 @@ local function node_connections(pos, tlib2)
 	local val = 0
 	local ndef = net_def2(pos, node.name, tlib2.tube_type)
 	local sides = ndef.sides or ndef.get_sides and ndef.get_sides(pos, node)
-	--print("node_connections", node.name, dump(sides))
 	if sides then
 		for dir = 1,6 do
 			val = val * 2
 			local side = DirToSide[outdir_to_dir(dir, node.param2)]
 			if sides[side] then
-				--print(side, sides[side], P2S(pos), dir, connected(tlib2, pos, dir))
 				if connected(tlib2, pos, dir) then
 					techage.mark_side("singleplayer", pos, dir, "node_connections", "", 1)--------------------
 					val = val + 1
@@ -335,10 +333,8 @@ function techage.networks.get_network(tube_type, netID)
 end
 
 function techage.networks.delete_network(tube_type, netID)
-	print("delete_network", tube_type, string.format("%012X", netID))
 	if Networks[tube_type] and Networks[tube_type][netID] then
 		Networks[tube_type][netID] = nil
-		print("deleted")
 	end
 end
 
diff --git a/chemistry/ta4_stand.lua b/chemistry/ta4_stand.lua
index c01ff9e..8ef275c 100644
--- a/chemistry/ta4_stand.lua
+++ b/chemistry/ta4_stand.lua
@@ -123,10 +123,8 @@ techage.power.enrich_node({"techage:ta4_reactor_stand"}, {
 -- controlled by the fillerpipe
 techage.register_node({"techage:ta4_reactor_stand"}, {
 	on_transfer = function(pos, in_dir, topic, payload)
-		--print(topic, dump(payload))
 		local nvm = techage.get_nvm(pos)
 		if topic == "power" then
-			--print("power", nvm.has_power)
 			return nvm.has_power or power.power_available(pos, Cable)
 		elseif topic == "output" then
 			local outdir = M(pos):get_int("outdir")
diff --git a/furnace/furnace_top.lua b/furnace/furnace_top.lua
index 893600d..cddc980 100644
--- a/furnace/furnace_top.lua
+++ b/furnace/furnace_top.lua
@@ -185,7 +185,6 @@ local function can_start(pos, nvm, state)
 end
 
 local function on_node_state_change(pos, old_state, new_state)
-	print("on_node_state_change")
 	local pwr1 = techage.needs_power2(old_state)
 	local pwr2 = techage.needs_power2(new_state)
 	if pwr1 ~= pwr2 then
diff --git a/liquids/liquid.lua b/liquids/liquid.lua
index e39187f..d24ae15 100644
--- a/liquids/liquid.lua
+++ b/liquids/liquid.lua
@@ -88,19 +88,15 @@ end
 
 local function get_network_table(pos, outdir, ntype)
 	local netID = get_netID(pos, outdir)
-print(1)	
 	if netID then
-print(2)	
 		local netw = networks.get_network("pipe2", netID)
 		if not netw then
-print(3)	
 			netw = networks.collect_network_nodes(pos, outdir, Pipe)
 			networks.set_network("pipe2", netID, netw)
 		end
 		print("netw", string.format("%012X", netID),  dump(netw))
 		return netw[ntype] or {}
 	end
-print(4)	
 	return {}
 end