diff --git a/sparkmachine/lua/quarry.lua b/sparkmachine/lua/quarry.lua
index 7a146f9..15efe93 100644
--- a/sparkmachine/lua/quarry.lua
+++ b/sparkmachine/lua/quarry.lua
@@ -1,11 +1,11 @@
 local NAME = minetest.get_current_modname()
 local ENERGYCOST  = {
-	static_struts = 20,
+	static_strut = 20,
 	dynamic_struct = 24,
 	hardness_mod = 1,
-	mining_cost = 40,
+	mining_cost = 25,
 }
-local FORMSPEC = sparktech.add_inventory(32,8,
+local FORMSPEC = sparktech.add_inventory(19.8,8,
 	"list[current_name;quarry;0,0;16,6;]")
 local MAX_SIZE = 64
 
@@ -42,7 +42,7 @@ local function on_construct(pos, player)
 	local meta = minetest.get_meta(pos)
 	meta:set_string("formspec", FORMSPEC)
 	local inventory = meta:get_inventory()
-	inventory:set_size('quarry', 128)
+	inventory:set_size('quarry', 96)
 end
 
 local function dig_node(pos, quarrypos)
@@ -131,10 +131,11 @@ local function clear_area(pos, pos2)
 	return true
 end
 
-local function place_strut(x, y, z)
-	local position = Position(x, y, z)
+local function place_strut(position, quarrypos)
 	if minetest.get_node(position).name == "air" then
-		minetest.set_node(position, { name = NAME .. ":static_strut"})
+		if try_drain_energy(quarrypos, ENERGYCOST.static_strut) then
+			minetest.set_node(position, { name = NAME .. ":static_strut"})
+		end
 		return true
 	else
 		return false
@@ -142,30 +143,30 @@ local function place_strut(x, y, z)
 end
 
 
-local function strut_line_x(x, y, z, x2)
+local function strut_line_x(x, y, z, x2, quarrypos)
 	local minx, maxx = order(x, x2)
 	for x3=minx, maxx do
-		if place_strut(x3, y, z) then
+		if place_strut(Position(x3, y, z), quarrypos) then
 			return false
 		end
 	end
 	return true
 end
 
-local function strut_line_y(x, y, z, y2)
+local function strut_line_y(x, y, z, y2, quarrypos)
 	local miny, maxy = order(y, y2)
 	for y3=miny, maxy do
-		if place_strut(x, y3, z) then
+		if place_strut(Position(x, y3, z), quarrypos) then
 			return false
 		end
 	end
 	return true
 end
 
-local function strut_line_z(x, y, z, z2)
+local function strut_line_z(x, y, z, z2, quarrypos)
 	local minz, maxz = order(z, z2)
 	for z3=minz, maxz do
-		if place_strut(x, y, z3) then
+		if place_strut(Position(x, y, z3), quarrypos) then
 			return false
 		end
 	end
@@ -210,18 +211,18 @@ local function timer_trigger(pos, elapsed)
 			end
 		else
 			minetest.debug("Build strats")
-			if not strut_line_x(pos.x, pos.y, pos.z, marker_pos.x) then break end
-			if not strut_line_x(pos.x, marker_pos.y, pos.z, marker_pos.x) then break end
-			if not strut_line_x(pos.x, pos.y, marker_pos.z, marker_pos.x) then break end
-			if not strut_line_x(pos.x, marker_pos.y, marker_pos.z, marker_pos.x) then break end
-			if not strut_line_z(pos.x, pos.y, pos.z, marker_pos.z) then break end
-			if not strut_line_z(marker_pos.x, pos.y, pos.z, marker_pos.z) then break end
-			if not strut_line_z(pos.x, marker_pos.y, pos.z, marker_pos.z) then break end
-			if not strut_line_z(marker_pos.x, marker_pos.y, pos.z, marker_pos.z) then break end
-			if not strut_line_y(marker_pos.x, pos.y,        marker_pos.z,        marker_pos.y) then break end
-			if not strut_line_y(pos.x,        pos.y,        marker_pos.z, marker_pos.y) then break end
-			if not strut_line_y(marker_pos.x, pos.y,        pos.z,        marker_pos.y) then break end
-			if not strut_line_y(pos.x,        pos.y,        pos.z,        marker_pos.y) then break end
+			if not strut_line_x(pos.x, pos.y, pos.z, marker_pos.x, pos) then break end
+			if not strut_line_x(pos.x, marker_pos.y, pos.z, marker_pos.x, pos) then break end
+			if not strut_line_x(pos.x, pos.y, marker_pos.z, marker_pos.x, pos) then break end
+			if not strut_line_x(pos.x, marker_pos.y, marker_pos.z, marker_pos.x, pos) then break end
+			if not strut_line_z(pos.x, pos.y, pos.z, marker_pos.z, pos) then break end
+			if not strut_line_z(marker_pos.x, pos.y, pos.z, marker_pos.z, pos) then break end
+			if not strut_line_z(pos.x, marker_pos.y, pos.z, marker_pos.z, pos) then break end
+			if not strut_line_z(marker_pos.x, marker_pos.y, pos.z, marker_pos.z, pos) then break end
+			if not strut_line_y(marker_pos.x, pos.y,        marker_pos.z,        marker_pos.y, pos) then break end
+			if not strut_line_y(pos.x,        pos.y,        marker_pos.z, marker_pos.y, pos) then break end
+			if not strut_line_y(marker_pos.x, pos.y,        pos.z,        marker_pos.y, pos) then break end
+			if not strut_line_y(pos.x,        pos.y,        pos.z,        marker_pos.y, pos) then break end
 			--shrink the operational area here to a 2d space with one piece of border taken away to drill there
 			--
 			local posx, pos2x = order(pos.x, marker_pos.x)
@@ -242,7 +243,7 @@ local function timer_trigger(pos, elapsed)
 
 	meta:set_int("current_frame", framenum)
 	
-	if framenum > -MAX_SIZE then minetest.get_node_timer(pos):start(0.1) end
+	if framenum >= -MAX_SIZE then minetest.get_node_timer(pos):start(0.1) end
 end
 
 minetest.register_node( NAME .. ":quarry_marker", {