diff --git a/mods/ITEMS/mcl_furnaces/init.lua b/mods/ITEMS/mcl_furnaces/init.lua
index 5e4d3fae8..82924d49e 100644
--- a/mods/ITEMS/mcl_furnaces/init.lua
+++ b/mods/ITEMS/mcl_furnaces/init.lua
@@ -224,7 +224,7 @@ minetest.register_node("mcl_furnaces:furnace", {
 		"default_furnace_side.png", "default_furnace_front.png"
 	},
 	paramtype2 = "facedir",
-	groups = {cracky=2, container=4, deco_block=1},
+	groups = {pickaxey=1, container=4, deco_block=1},
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 
@@ -266,6 +266,7 @@ minetest.register_node("mcl_furnaces:furnace", {
 	allow_metadata_inventory_take = allow_metadata_inventory_take,
 	on_receive_fields = craftguide,
 	_mcl_blast_resistance = 17.5,
+	_mcl_hardness = 3.5,
 })
 
 minetest.register_node("mcl_furnaces:furnace_active", {
@@ -278,7 +279,7 @@ minetest.register_node("mcl_furnaces:furnace_active", {
 	paramtype2 = "facedir",
 	light_source = 13,
 	drop = "mcl_furnaces:furnace",
-	groups = {cracky=2, container=4, deco_block=1, not_in_creative_inventory=1},
+	groups = {pickaxey=1, container=4, deco_block=1, not_in_creative_inventory=1},
 	is_ground_content = false,
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	on_timer = furnace_node_timer,
@@ -304,6 +305,7 @@ minetest.register_node("mcl_furnaces:furnace_active", {
 	allow_metadata_inventory_take = allow_metadata_inventory_take,
 	on_receive_fields = craftguide,
 	_mcl_blast_resistance = 17.5,
+	_mcl_hardness = 3.5,
 })
 
 minetest.register_craft({
diff --git a/mods/ITEMS/mcl_heads/init.lua b/mods/ITEMS/mcl_heads/init.lua
index df90c92f8..80fc4e77f 100644
--- a/mods/ITEMS/mcl_heads/init.lua
+++ b/mods/ITEMS/mcl_heads/init.lua
@@ -11,7 +11,7 @@ local function addhead(node, desc)
 				{ -0.25, -0.5, -0.25, 0.25, 0.0, 0.25, },   			
 			},
 		},
-		groups = {oddly_breakable_by_hand=3, head=1, deco_block=1},
+		groups = {handy=1, head=1, deco_block=1},
 		tiles = {
 			"head_"..node.."_top.png",
 			"head_"..node.."_top.png",
@@ -33,6 +33,7 @@ local function addhead(node, desc)
 			footstep = {name="default_hard_footstep", gain=0.3}
 		}),
 		_mcl_blast_resistance = 5,
+		_mcl_hardness = 1,
 	})
 end
 
diff --git a/mods/ITEMS/mcl_hoppers/init.lua b/mods/ITEMS/mcl_hoppers/init.lua
index 123978866..cdfeb5ffe 100644
--- a/mods/ITEMS/mcl_hoppers/init.lua
+++ b/mods/ITEMS/mcl_hoppers/init.lua
@@ -16,7 +16,7 @@ minetest.register_node("mcl_hoppers:hopper", {
 	description = "Hopper",
 	inventory_image = "mcl_hoppers_item.png",
 	wield_image = "mcl_hoppers_item.png",
-	groups = {cracky=1,level=2,container=2,deco_block=1,},
+	groups = {pickaxey=1, container=2,deco_block=1,},
 	drawtype = "nodebox",
 	paramtype = "light",
 	tiles = {"mcl_hoppers_hopper_inside.png^mcl_hoppers_hopper_top.png", "mcl_hoppers_hopper_outside.png", "mcl_hoppers_hopper_outside.png", "mcl_hoppers_hopper_inside.png", "mcl_hoppers_hopper_outside.png", "mcl_hoppers_hopper_outside.png"},
@@ -112,12 +112,13 @@ minetest.register_node("mcl_hoppers:hopper", {
 	end,
 	sounds = mcl_sounds.node_sound_metal_defaults(),
 	_mcl_blast_resistance = 24,
+	_mcl_hardness = 3,
 })
 
 minetest.register_node("mcl_hoppers:hopper_side", {
 	description = "Hopper (Side)",
 	drop = "mcl_hoppers:hopper",
-	groups = {cracky=1,level=2,container=2,not_in_creative_inventory=1},
+	groups = {pickaxey=1, container=2,not_in_creative_inventory=1},
 	drawtype = "nodebox",
 	paramtype = "light",
 	paramtype2 = "facedir",
@@ -174,6 +175,7 @@ minetest.register_node("mcl_hoppers:hopper_side", {
 	end,
 	sounds = mcl_sounds.node_sound_metal_defaults(),
 	_mcl_blast_resistance = 24,
+	_mcl_hardness = 3,
 })
 
 -- Make hoppers suck in dropped items
diff --git a/mods/ITEMS/mcl_jukebox/init.lua b/mods/ITEMS/mcl_jukebox/init.lua
index 2fff56a69..dad821766 100644
--- a/mods/ITEMS/mcl_jukebox/init.lua
+++ b/mods/ITEMS/mcl_jukebox/init.lua
@@ -77,7 +77,7 @@ minetest.register_node("mcl_jukebox:jukebox", {
 	description = "Jukebox",
 	tiles = {"mcl_jukebox_top.png", "mcl_jukebox_side.png", "mcl_jukebox_side.png"},
 	sounds = mcl_sounds.node_sound_wood_defaults(),
-	groups = {oddly_breakable_by_hand=1, choppy=3, deco_block=1},
+	groups = {handy=1,axey=1, deco_block=1},
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()
@@ -146,6 +146,7 @@ minetest.register_node("mcl_jukebox:jukebox", {
 		meta:from_table(meta2:to_table())
 	end,
 	_mcl_blast_resistance = 30,
+	_mcl_hardness = 2,
 })
 
 minetest.register_craft({
diff --git a/mods/ITEMS/mcl_minecarts/rails.lua b/mods/ITEMS/mcl_minecarts/rails.lua
index 6c90ed3e9..f2f8ef7dc 100644
--- a/mods/ITEMS/mcl_minecarts/rails.lua
+++ b/mods/ITEMS/mcl_minecarts/rails.lua
@@ -14,9 +14,10 @@ minetest.register_node("mcl_minecarts:rail", {
                 fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
 	},
 	stack_max = 64,
-	groups = {cracky=3,oddly_breakable_by_hand=3,attached_node=1,rail=1,connect_to_raillike=1,dig_by_water=1,transport=1},
+	groups = {handy=1,pickaxey=1, attached_node=1,rail=1,connect_to_raillike=1,dig_by_water=1,transport=1},
 	sounds = mcl_sounds.node_sound_defaults(),
 	_mcl_blast_resistance = 3.5,
+	_mcl_hardness = 0.7,
 })
 
 minetest.register_craft({
@@ -43,7 +44,7 @@ minetest.register_node("mcl_minecarts:golden_rail", {
 		-- but how to specify the dimensions for curved and sideways rails?
 		fixed = {-1/2, -1/2, -1/2, 1/2, -1/2+1/16, 1/2},
 	},
-	groups = {cracky = 3, oddly_breakable_by_hand = 3, attached_node = 1, rail = 1, connect_to_raillike = 1, dig_by_water = 1, transport = 1},
+	groups = {handy=1,pickaxey=1, attached_node = 1, rail = 1, connect_to_raillike = 1, dig_by_water = 1, transport = 1},
 	
 	after_place_node = function(pos, placer, itemstack)
 		if not mesecon then
@@ -63,6 +64,7 @@ minetest.register_node("mcl_minecarts:golden_rail", {
 		},
 	},
 	_mcl_blast_resistance = 3.5,
+	_mcl_hardness = 0.7,
 })
 
 minetest.register_craft({