# Custom Block/Item

By default all machines share the same block (id: `custommachinery:custom_machine_block`) and the same item (id: `custommachinery:custom_machine_item`) and are differentiated by their NBT tag (like enchanted books for example).

This can cause issue when some mod can't differentiate blocks/items by NBT (questing mods, guidebook, ponders...).

However you can use [KubeJS](https://www.curseforge.com/minecraft/mc-mods/kubejs) to create a custom block and custom item for the machine.

{% hint style="warning" %}
The following script MUST be put on the `startup_scripts` folder and be the same on both the server and the client.
{% endhint %}

```java
//Subscribe to the block registry event.
//No need to use the item registry event, the item will be created automatically.
onEvent('block.registry', event => {
	//Syntax : event.create("namespace:block_id", "custommachinery").machine("namespace:machine_id)
	event.create("kubejs:stone_generator", "custommachinery").machine("custommachinery:stone_generator")
	
	//If the block id is the same than the machine id you don't have to use .machine()
	event.create("custommachinery:power_crusher", "custommachinery")
})
```


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