anchor.diff:  		/obj/item/stack/sheet/iron = 1)
   	time = 1 SECONDS
   	category = CAT_ATMOSPHERIC
  +	additional_req_text = " smart pipe fitting"
   
   /datum/crafting_recipe/he_pipe/check_requirements(mob/user, list/collected_requirements)
   	return atmos_pipe_check(user, collected_requirements)
  
positive.code: 		/obj/item/stack/cable_coil = 5)
  	time = 2 SECONDS
  	category = CAT_ATMOSPHERIC
  
  /datum/crafting_recipe/filter/check_requirements(mob/user, list/collected_requirements)
  	return atmos_pipe_check(user, collected_requirements)
  
negative.code: 		/obj/item/stack/sheet/iron = 1)
  	time = 2 SECONDS
  	category = CAT_ATMOSPHERIC
  	additional_req_text = " smart pipe fitting"
  
  /datum/crafting_recipe/passive_vent/check_requirements(mob/user, list/collected_requirements)
  	return atmos_pipe_check(user, collected_requirements)
  