This guide will explain how to make custom crafting recipes for Scrap Mechanic Survival.
Item UUIDs
The first part of making a custom crafting recipe is figuring out an item’s UUID.
If you go to your Steam Library, and right-click on Scrap Mechanic, select Manage>Browse Local Files and then look in Survival>CraftingRecipes>item_names.json.
If your computer says that you don’t have a program to open that kind of file, and you have Windows, don’t worry, Notepad works fine for JSON.
Now, This is a UUID:
“f08d772f-9851-400f-a014-d847900458a7”
And this is an item name:
“obj_interactive_fridge”
This is how UUIDs and item names are grouped in the item_names.json file:
{
//--------------------------------------
// appliances.json
//--------------------------------------
"f08d772f-9851-400f-a014-d847900458a7": "obj_interactive_fridge",
"d0afb527-e786-4a22-a907-6da7e7cba8cb": "obj_interactive_locker",
"90dbaebf-8ea1-4a5a-8f6f-86ddde77c6c8": "obj_interactive_filecabinet",
"8694192c-d91b-444c-a184-910911bbb354": "obj_interactive_stafftoilet",
//--------------------------------------
// blocks.json
//--------------------------------------
"1fc74a28-addb-451a-878d-c3c605d63811": "blk_scrapwood",
"df953d9c-234f-4ac2-af5e-f0490b223e71": "blk_wood1",
"1897ee42-0291-43e4-9645-8c5a5d310398": "blk_wood2",
"061b5d4b-0a6a-4212-b0ae-9e9681f1cbfb": "blk_wood3",
"1f7ac0bb-ad45-4246-9817-59bdf7f7ab39": "blk_scrapmetal",
"8aedf6c2-94e1-4506-89d4-a0227c552f1e": "blk_metal1",
"1016cafc-9f6b-40c9-8713-9019d399783f": "blk_metal2",
"c0dfdea5-a39d-433a-b94a-299345a5df46": "blk_metal3",
"30a2288b-e88e-4a92-a916-1edbfc2b2dac": "blk_scrapstone",
"a6c6ce30-dd47-4587-b475-085d55c6a3b4": "blk_concrete1",
"ff234e42-5da4-43cc-8893-940547c97882": "blk_concrete2",
"e281599c-2343-4c86-886e-b2c1444e8810": "blk_concrete3",
"f0cba95b-2dc4-4492-8fd9-36546a4cb5aa": "blk_cardboard",
"c56700d9-bbe5-4b17-95ed-cef05bd8be1b": "blk_sand",
"628b2d61-5ceb-43e9-8334-a4135566df7a": "blk_plastic",
"5f41af56-df4c-4837-9b3c-10781335757f": "blk_glass",
"749f69e0-56c9-488c-adf6-66c58531818f": "blk_glasstile",
"b5ee5539-75a2-4fef-873b-ef7c9398b3f5": "blk_armoredglass",
"f406bf6e-9fd5-4aa0-97c1-0b3c2118198e": "blk_bubblewrap",
"920b40c8-6dfc-42e7-84e1-d7e7e73128f6": "blk_restroom",
"8ca49bff-eeef-4b43-abd0-b527a567f1b7": "blk_tiles",
"0603b36e-0bdb-4828-b90c-ff19abcdfe34": "blk_bricks",
"073f92af-f37e-4aff-96b3-d66284d5081c": "blk_lights",
"09ca2713-28ee-4119-9622-e85490034758": "blk_caution",
"f5ceb7e3-5576-41d2-82d2-29860cf6e20e": "blk_crackedconcrete",
"cd0eff89-b693-40ee-bd4c-3500b23df44e": "blk_concretetiles",
"220b201e-aa40-4995-96c8-e6007af160de": "blk_metalbricks",
"25a5ffe7-11b1-4d3e-8d7a-48129cbaf05e": "blk_beam",
"9be6047c-3d44-44db-b4b9-9bcf8a9aab20": "blk_insulation",
"b145d9ae-4966-4af6-9497-8fca33f9aee3": "blk_drywall",
"febce8a6-6c05-4e5d-803b-dfa930286944": "blk_carpet",
"e981c337-1c8a-449c-8602-1dd990cbba3a": "blk_plasticwall",
"4aa2a6f0-65a4-42e3-bf96-7dec62570e0b": "blk_metalnet",
"3d0b7a6e-5b40-474c-bbaf-efaa54890e6a": "blk_crossnet",
"ea6864db-bb4f-4a89-b9ec-977849b6713a": "blk_tryponet",
"a479066d-4b03-46b5-8437-e99fec3f43ee": "blk_stripednet",
"b4fa180c-2111-4339-b6fd-aed900b57093": "blk_squarenet",
"027bd4ec-b16d-47d2-8756-e18dc2af3eb6": "blk_spaceshipmetal",
"4ad97d49-c8a5-47f3-ace3-d56ba3affe50": "blk_spaceshipfloor",
"f7d4bfed-1093-49b9-be32-394c872a1ef4": "blk_treadplate",
"3e3242e4-1791-4f70-8d1d-0ae9ba3ee94c": "blk_warehousefloor",
"d740a27d-cc0f-4866-9e07-6a5c516ad719": "blk_wornmetal",
"c4a2ffa8-c245-41fb-9496-966c6ee4648b": "blk_framework",
}If you understand what the item names mean, you can find any survival item in here.
An extra tip: use Notepad’s “Find…” option in the Edit tab to find a specific item name or UUID. It works well with finding specific items you want to remove from crafting recipes, or finding items you can’t find. An example from experience: I was looking for Component Kit’s UUID in the Resources section of the file, but for some reason it was in Consumables, under the name “obj_consumable_component”.
Recipe Formatting
When working with JSON files for crafting recipes, you need to be careful because these files must be written in a very specific way. Before making big changes to these files, you should:
- Save a copy of the original files
- Save copies of any working changes you’ve made
- Create a folder outside of Steam to store these backup files
This is important because if something goes wrong, you can always go back to a working version instead of having to start over.
This is a basic placeholder recipe:
{
"itemID": "UUID",
"quantity": #,
"craftTime": #,
"ingredientList": [
{
"quantity": #,
"itemID": "UUID"
},
{
"quantity": #,
"itemID": "UUID"
}
]
}The main rule of JSON is that, if you add a bracket (eg. [], {}), there must always be another bracket of the opposite side after it, closing off the bracket into one section
Another rule is: The closing bracket must be after the opening bracket, there can’t be any in between.
And: They must be a part of the same group
Examples:
Incorrect:
{
"placeholder" // Incorrect: no comma
"placeholder",
"placeholder"
}
{
"placeholder",
"placeholder"
{ // Incorrect: bracket facing wrong way
{
"stringplaceholder": placeholder, // Incorrect: does not have quotes
"numberplaceholder": "placeholder" // Incorrect: string instead of a number
// Incorrect: no closing bracketCreating Your First Recipe
Now, for this section, I will use my own edited recipe as an example
{
"itemId": "f6250bf4-9726-406f-a29a-945c06e460e5",
"quantity": 1,
"craftTime": 0,
"ingredientList": [
{
"quantity": 20,
"itemId": "1016cafc-9f6b-40c9-8713-9019d399783f"
},
{
"quantity": 10,
"itemId": "36335664-6e61-4d44-9876-54f9660a8565"
},
{
"quantity": 10,
"itemId": "5530e6a0-4748-4926-b134-50ca9ecb9dcf"
}
]
}If you use Notepad’s Find function (Mentioned in an earlier section) you can copy-paste the UUIDs in this recipe and you can find what this code adds to the craftbot. If you have looked at my earlier discussions, You will recognize this recipe.
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