#How do I upload an existing item model into blockbench?
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The method depends on the kind of item model you want in Blockbench (and what you want to do with it in Blockbench)
I meant to upload a diamond sword for example and just change things
Instead of just making it
Do you need to actually edit the cubes of the sword (to make it more 3D etc.)?
Or do you just wanna make it longer etc.?
Or do you just wanna use it as reference for your own model?
!faq texture-to-3D
(Result for "texture-to-3D")
Depending on where you wanna have the model there are different ways to turn a texture into a (default-item like) model:
1. Letting the game generate it from a texture (vanilla Java)
2. Directly adding a new item (Bedrock Edition)
3. Letting Blockbench generate it (ONLY use this if the other options are not applicable!!!)
**
1. Letting the game generate it from a texture:**
Create a .json file somewhere inside your models folder and put this code inside of it:
{
"parent": "item/generated",
"textures": {
"layer0": "custom/example"
}
}``` This will tell the game to generate a model based on the texture `YourPack/assets/minecraft/textures/custom/example.png`.
(Use `item/handheld` as parent instead if you want it to be held like a weapon).
It can be used just like any other model, so you can either replace an existing item with it or "add" it with custom_model_data. You can also load it into Blockbench to edit the display settings.
**  2. Directly adding a new item in Bedrock Edition:**
Please follow the steps described in here:
Default like items: <https://wiki.bedrock.dev/items/items-intro.html>
Custom 3D model items: <https://wiki.bedrock.dev/items/3d-items.html>
**  3. Generating it in Blockbench:**
ONLY use this approach if you plan on editing it more than what the other option allows you to do!!!
You need to make sure to use per-face uv (_not_ box-uv!) and then do `File > Import > Extruded Image` and select your texture. Then, pick the way it should generate the texture. You can chose between pixel by pixel, line by line (horizontal/vertical) or in as little chunks as possible (area).
I suggest to always use area for performance. If you wanna edit each pixel/line choose one of the other options.
Method 3
You don't understand
I'm trying to upload a normal diamond sword
Not something I have as a file
yes, and Method 3 is how you upload a normal diamond sword (from a texture)
if you don't have the texture:
!faq default-pack
Disclaimer: Use these packs as REFERENCE, don't put your models inside them, it just increases your pack needlessly. Also don't put any of the unedited files from it into your own pack. The distributions of default assets in your pack is illegal.
For Java Edition:
(This works the same for all versions, 1.17 is just used as an example here)
Go to .minecraft/versions/1.17 and open the 1.17.jar in there with a zip program. Alternativley you can copy the .jar file and change the file extension to .zip and double click it.
Extract/copy the "assets" folder inside the jar somewhere. It contains all the default models/textures.
For Bedrock Edition:
Go to https://docs.microsoft.com/en-us/minecraft/creator/documents/resourcepack and scroll to "Building the Resource Pack". The download for the vanilla resource pack can be found right above that title.
Alternatively here is the direct download link: https://aka.ms/resourcepacktemplate