epic hammer craft

Hello,
players are making hundreds of hammers to recover epic scrap.
How to prevent this?
How can we prevent a hammer from being epic when it is made?

Hi imthenewguy,

At these 3 locations?
"A black list of items that will not be refunded when using the assembler buff": [
    "gunpowder",
    "explosives",
    "sulfur",
  ],
  "A black list of items that will not be duplicated when using the fabricators buff": [
    "gunpowder",
    "explosives",
    "sulfur",
  ],
  "A black list of items that will be ignored by the reinforced buff": [
    "keycard_green",
    "keycard_blue",
  ],

thx,
like that ? :
    "List of craftable items that cannot be enhanced": [
      "hammer"
      ]

thx imthenewguy
we can close the request