> For the complete documentation index, see [llms.txt](https://www.blenderguppy.com/add-ons/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.blenderguppy.com/add-ons/random-flow/functions/shading/append-materials.md).
# Append Materials
This operator appends preset materials to the scene. They use my own grunge shader node groups to create grunge effects on the material.
Figure 1
{% hint style="info" %}
*Preview images below are not image textures but the result of the materials added to a plane.*
{% endhint %}
These materials are prefixed with "rflow\_" for easy query and identification and for now are:
### rflow\_cloth
This is the grunge shader I use for cloth models particulary ones created using the **Panel Cloth** operator in **Random Flow**.
Figure 1
### rflow\_glass\_cylinder
I use this for cylinder objects mostly when I model some scifi canisters but it can also be used for other designs.
Figure 2
### rflow\_metal
This is the base of some of the other materials in the set and is not using any images for additional details like texture or bumps.
Figure 3
### rflow\_panel\_hard\_obj / rflow\_panel\_hard\_uv
This is using the **rflow\_metal** material setup but image textures has been added for additional detail. It uses one of the two 4k images I have baked using Random Flow. These come in two versions, with one using UV mapping and the other using Object mapping.
Figure 4
### rflow\_panel\_soft\_obj / rflow\_panel\_soft\_uv
This is using the **rflow\_metal** material setup but image textures has been added for additional detail. It uses one of the two 4k images I have baked using Random Flow. These also come in two versions, with one using UV mapping and the other using Object mapping.
Figure 5
These materials serves as a template you can freely modify. They can also serve as preview materials for quick renders if you plan to use other shaders later on.
Figure 6
In Figure 6, you can see that after the details are done using Random Flow the model can be quickly previewed using material shaders in render.
Figure 7
Having the grunge effects so easily achieved using my own shader nodes allows you to render your models much more convincingly.
Figure 8
This will allow you to create concept art or production pieces with less effort so you can let your imaginations run wild.
{% hint style="info" %}
*In my YouTube videos, these materials are assigned to the mesh using Creative Flow's Assign Material operator but without this add-on you can always add them to the mesh manually.*
{% endhint %}
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://www.blenderguppy.com/add-ons/random-flow/functions/shading/append-materials.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.