diff --git a/inspect.lua b/inspect.lua
index 2e9139e..bddfc7b 100644
--- a/inspect.lua
+++ b/inspect.lua
@@ -99,16 +99,71 @@ replacer.inspect = function( itemstack, user, pointed_thing, mode, show_receipe
 	return nil; -- no item shall be removed from inventory
 end
 
+-- some common groups
+replacer.group_placeholder = {};
+replacer.group_placeholder[ 'group:wood'  ] = 'default:wood';
+replacer.group_placeholder[ 'group:tree'  ] = 'default:tree';
+replacer.group_placeholder[ 'group:stick' ] = 'default:stick';
+replacer.group_placeholder[ 'group:stone' ] = 'default:stone';
+replacer.group_placeholder[ 'group:sand'  ] = 'default:sand';
+replacer.group_placeholder[ 'group:leaves'] = 'default:leaves';
+replacer.group_placeholder[ 'group:wood_slab'] = 'stairs:slab_wood';
+replacer.group_placeholder[ 'group:wool'  ] = 'wool:white';
 
 replacer.image_button_link = function( stack_string )
+	local group = '';
+	if( replacer.group_placeholder[ stack_string ] ) then
+		stack_string = replacer.group_placeholder[ stack_string ];
+		group = 'G';
+	end		
+-- TODO: show information about other groups not handled above
 	local stack = ItemStack( stack_string );
 	local new_node_name = stack_string;
 	if( stack and stack:get_name()) then
 		new_node_name = stack:get_name();
 	end
-	return tostring( stack_string )..';'..tostring( new_node_name );
+	return tostring( stack_string )..';'..tostring( new_node_name )..';'..group;
 end
 
+replacer.add_circular_saw_receipe = function( node_name, receipes )
+	if( not( node_name ) or not( circular_saw ) or not( circular_saw.names) or (node_name=='moreblocks:circular_saw')) then
+		return;
+	end
+	local help = node_name:split( ':' );
+	if( not( help ) or #help ~= 2 or help[1]=='stairs') then
+		return;
+	end
+	help2 = help[2]:split('_');
+	if( not( help2 ) or #help2 < 2 or (help2[1]~='micro' and help2[1]~='panel' and help2[1]~='stair' and help2[1]~='slab')) then
+		return;
+	end
+--	for i,v in ipairs( circular_saw.names ) do
+--		modname..":"..v[1].."_"..material..v[2]
+
+-- TODO: write better and more correct method of getting the names of the materials
+-- TODO: make sure only nodes produced by the saw are listed here
+help[1]='default';
+	local basic_node_name = help[1]..':'..help2[2];
+	-- node found that fits into the saw
+	receipes[ #receipes+1 ] = { method = 'saw',          type = 'saw',          items = { basic_node_name }, output = node_name};
+	return receipes;
+end
+
+replacer.add_colormachine_receipe = function( node_name, receipes )
+	if( not( colormachine )) then
+		return;
+	end
+	local res = colormachine.get_node_name_painted( node_name, "" );
+
+	if( not( res) or not( res.possible  ) or #res.possible < 1 ) then
+		return;
+	end
+	-- paintable node found
+	receipes[ #receipes+1 ] = { method = 'colormachine', type = 'colormachine', items = { res.possible[1] }, output = node_name};
+	return receipes;
+end
+
+
 replacer.inspect_show_crafting = function( name, node_name, fields )
 	if( not( name )) then
 		return;
@@ -119,16 +174,6 @@ replacer.inspect_show_crafting = function( name, node_name, fields )
 		receipe_nr = tonumber(fields.receipe_nr);
 	end
 
-
-	local res = minetest.get_all_craft_recipes( node_name );
-
-	-- offer all alternate creafting receipes thrugh prev/next buttons
-	if(     fields and fields.prev_receipe and res and receipe_nr > 1 ) then
-		receipe_nr = receipe_nr - 1;
-	elseif( fields and fields.next_receipe and res and receipe_nr < #res ) then
-		receipe_nr = receipe_nr + 1;
-	end
-
 	-- the player may ask for receipes of indigrents to the current receipe
 	if( fields ) then
 		for k,v in pairs( fields ) do
@@ -142,6 +187,21 @@ replacer.inspect_show_crafting = function( name, node_name, fields )
 		end
 	end
 
+	local res = minetest.get_all_craft_recipes( node_name );
+	if( not( res )) then
+		res = {};
+	end
+	-- add special receipes for nodes created by machines
+	replacer.add_circular_saw_receipe( node_name, res );
+	replacer.add_colormachine_receipe( node_name, res );
+
+	-- offer all alternate creafting receipes thrugh prev/next buttons
+	if(     fields and fields.prev_receipe and receipe_nr > 1 ) then
+		receipe_nr = receipe_nr - 1;
+	elseif( fields and fields.next_receipe and receipe_nr < #res ) then
+		receipe_nr = receipe_nr + 1;
+	end
+
 	local formspec = "size[6,6]"..
 		"field[20,20;0.1,0.1;node_name;node_name;"..node_name.."]".. -- invisible field for passing on information
 		"field[21,21;0.1,0.1;receipe_nr;receipe_nr;"..tostring( receipe_nr ).."]".. -- another invisible field
@@ -163,26 +223,30 @@ replacer.inspect_show_crafting = function( name, node_name, fields )
 			local drop = minetest.registered_nodes[ node_name ].drop;
 			if( drop and type( drop )=='string' and drop ~= node_name ) then
 				formspec = formspec.."label[2,1.6;Drops on dig:]"..
-					"item_image_button[2,2;1.0,1.0;"..replacer.image_button_link( drop )..";]";
+					"item_image_button[2,2;1.0,1.0;"..replacer.image_button_link( drop ).."]";
 			end
 		end
 	else
 		formspec = formspec.."label[1,5;Alternate "..tostring( receipe_nr ).."/"..tostring( #res ).."]";
--- TODO: handle groups
--- TODO: add support for saw
--- TODO: add support for colormachine
 		-- reverse order; default receipes (and thus the most intresting ones) are usually the oldest
 		local receipe = res[ #res+1-receipe_nr ];
-		if(     receipe.type=='normal'  and receipe.items and #receipe.items>0) then
+		if(     receipe.type=='normal'  and receipe.items) then
 			for i=1,9 do
 				if( receipe.items[i] ) then
 					formspec = formspec.."item_image_button["..(((i-1)%3)+1)..','..(math.floor((i-1)/3)+1)..";1.0,1.0;"..
-							replacer.image_button_link( receipe.items[i] )..";]";
+							replacer.image_button_link( receipe.items[i] ).."]";
 				end
 			end
 		elseif( receipe.type=='cooking' and receipe.items and #receipe.items==1 ) then
-			formspec = formspec.."image[1,1;3.4,3.4;default_furnace_front.png]"..
-					"item_image_button[2,2;1.0,1.0;"..replacer.image_button_link( receipe.items[1] )..";]";
+			formspec = formspec.."item_image_button[1,1;3.4,3.4;"..replacer.image_button_link( 'default:furnace' ).."]".. --default_furnace_front.png]"..
+					"item_image_button[2.9,2.7;1.0,1.0;"..replacer.image_button_link( receipe.items[1] ).."]";
+		elseif( receipe.type=='colormachine' and receipe.items and #receipe.items==1 ) then
+			formspec = formspec.."item_image_button[1,1;3.4,3.4;"..replacer.image_button_link( 'colormachine:colormachine' ).."]".. --colormachine_front.png]"..
+					"item_image_button[2,2;1.0,1.0;"..replacer.image_button_link( receipe.items[1] ).."]";
+		elseif( receipe.type=='saw'          and receipe.items and #receipe.items==1 ) then
+			--formspec = formspec.."item_image[1,1;3.4,3.4;moreblocks:circular_saw]"..
+			formspec = formspec.."item_image_button[1,1;3.4,3.4;"..replacer.image_button_link( 'moreblocks:circular_saw' ).."]"..
+					"item_image_button[2,0.6;1.0,1.0;"..replacer.image_button_link( receipe.items[1] ).."]";
 		else
 			formspec = formspec..'label[3,1;Error: Unkown receipe.]';
 		end