diff --git a/worldeditadditions/init.lua b/worldeditadditions/init.lua
index 2e12168..7b04b3c 100644
--- a/worldeditadditions/init.lua
+++ b/worldeditadditions/init.lua
@@ -63,7 +63,7 @@ dofile(wea.modpath.."/lib/conv/conv.lua")
 dofile(wea.modpath.."/lib/erode/erode.lua")
 dofile(wea.modpath.."/lib/noise/init.lua")
 wea.sculpt		= dofile(wea.modpath.."/lib/sculpt/init.lua")
-wea.metaballs	= dofile(wea.modpath.."/lib/metaballs.lua")
+wea.metaballs	= dofile(wea.modpath.."/lib/metaballs/init.lua")
 
 dofile(wea.modpath.."/lib/copy.lua")
 dofile(wea.modpath.."/lib/move.lua")
diff --git a/worldeditadditions_commands/commands/metaballs.lua b/worldeditadditions_commands/commands/metaballs.lua
index bc9879d..311045a 100644
--- a/worldeditadditions_commands/commands/metaballs.lua
+++ b/worldeditadditions_commands/commands/metaballs.lua
@@ -7,7 +7,7 @@ local Vector3 = wea.Vector3
 -- ██   ██ ██    ██ ██  ██  ██ ██
 -- ██████   ██████  ██      ██ ███████
 worldedit.register_command("metaballs", {
-	params = "add <radius> | remove <index> | list | render <replace_node> | clear",
+	params = "add <radius> | remove <index> | list | render <replace_node> [<threshold=1>] | clear",
 	description = "Defines and creates metaballs. After using the add subcommand to define 1 or more metaballs (uses pos1), the render subcommand can then be used to create the metaballs as nodes.",
 	privs = { worldedit = true },
 	require_pos = 1,
@@ -19,8 +19,18 @@ worldedit.register_command("metaballs", {
 		if #parts < 1 then
 			return false, "Error: Not enough arguments (see /help /dome for usage information)."
 		end
+		
 		local subcommand = parts[1]
 		local subargs = {}
+		
+		if subcommand == "delete" then subcommand = "remove" end
+		if subcommand == "deleteall" then subcommand = "clear" end
+		if subcommand == "append" then subcommand = "add" end
+		if subcommand == "list" then subcommand = "list" end
+		if subcommand == "make" then subcommand = "render" end
+		if subcommand == "generate" then subcommand = "render" end
+		if subcommand == "create" then subcommand = "render" end
+		
 		if subcommand == "add" then
 			local radius = tonumber(parts[2])
 			if not radius then
@@ -41,10 +51,22 @@ worldedit.register_command("metaballs", {
 			table.insert(subargs, index)
 		elseif subcommand == "render" then
 			local replace_node = worldedit.normalize_nodename(parts[2])
+			local threshold = 1
+			
 			if not replace_node then
 				return false, "Error: Invalid replace_node '"..parts[2].."'."
 			end
+			
+			if #parts >= 3 then
+				threshold = tonumber(parts[3])
+				if not threshold then
+					return false, "Error: The threshold value must be a valid number (a floating-point number is ok)."
+				end
+			end
 			table.insert(subargs, replace_node)
+			table.insert(subargs, threshold)
+		elseif subcommand ~= "list" and subcommand ~= "clear" then
+			return false, "Error: Unknown subcommand '"..parts[1].."'."
 		end
 		
 		return true, subcommand, subargs
@@ -56,16 +78,61 @@ worldedit.register_command("metaballs", {
 			return 0
 		end
 	end,
-	func = function(name, radius, replace_node, axes, hollow)
+	func = function(name, subcommand, subargs)
 		local start_time = wea.get_ms_time()
-		
-		
-		
+		local message = ""
+		local append_time = true
+		if subcommand == "list" then
+			local success, list = wea.metaballs.list_pretty(name)
+			if not success then return success, list end
+			
+			message = list
+			append_time = false
+		elseif subcommand == "clear" then
+			local success, metaballs_cleared = wea.metaballs.clear(name)
+			if not success then return success, metaballs_cleared end
+			
+			message = tostring(metaballs_cleared).." cleared"
+		elseif subcommand == "remove" then
+			local index = subargs[1]
+			
+			local success, metaballs_count = wea.metaballs.remove(name, index)
+			if not success then return success, metaballs_count end
+			
+			message = "metaball at index "..tostring(index).." removed - "..metaballs_count.." metaballs remain"
+		elseif subcommand == "add" then
+			local pos = Vector3.clone(worldedit.pos1[name])
+			local radius = subargs[1]
+			
+			local success, metaballs_count = wea.metaballs.add(name, pos, radius)
+			if not success then return success, metaballs_count end
+			
+			message = "added metaball at "..pos.." with radius "..tostring(radius).." - "..metaballs_count.." metaballs are now defined"
+		elseif subcommand == "render" then
+			local replace_node = subargs[1]
+			local threshold = subargs[2]
+			
+			local success, metaballs = wea.metaballs.list(name)
+			if not success then return success, metaballs end
+			
+			if #metaballs < 2 then
+				return false, "Error: At least 2 metaballs must be defined to render them."
+			end
+			
+			local success2, nodes_replaced = wea.metaballs.render(metaballs, replace_node, threshold)
+			if not success2 then return success2, nodes_replaced end
+			
+			message = nodes_replaced.." nodes replaced using "..tostring(#metaballs).." metaballs"
+		end
 		
 		local time_taken = wea.get_ms_time() - start_time
 		
 		
-		minetest.log("action", name.." used //dome+ at "..pos.." with a radius of "..tostring(radius)..", modifying "..nodes_replaced.." nodes in "..wea.format.human_time(time_taken))
-		return true, nodes_replaced.." nodes replaced "..wea.format.human_time(time_taken)
+		if append_time then
+			message = message.." in "..wea.format.human_time(time_taken)
+		end
+		
+		minetest.log("action", name.." used //metaballs "..subcommand.." in "..wea.format.human_time(time_taken))
+		return true, message
 	end
 })