# How to add a new kind of materials?

**URL:** <https://discourse.cataclysmdda.org/t/how-to-add-a-new-kind-of-materials/24855>\
**Category:** The Toolbox\
**Created:** [October 2, 2020, 9:10am UTC](https://discourse.cataclysmdda.org/t/how-to-add-a-new-kind-of-materials/24855 "2020-10-02T09:10:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Spartan\_Joesima](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/spartan_joesima/32/6468_2.png) [@Spartan\_Joesima](https://discourse.cataclysmdda.org/u/Spartan_Joesima)\
**Post date:** [October 2, 2020, 9:10am UTC](https://discourse.cataclysmdda.org/t/how-to-add-a-new-kind-of-materials/24855/1 "2020-10-02T09:10:51Z")

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I am trying to add a new kind of material to this game,and the new material had been added to materials.json,but when I load the game,it show the debug message that said invoild materials…  
{  
“type”: “material”,  
“ident”: “nanometer\_fabric”,  
“name”: “Nanometer Fabric”,  
“density”: 10,  
“specific\_heat\_liquid”: 0.82,  
“specific\_heat\_solid”: 0.45,  
“latent\_heat”: 273,  
“soft”: true,  
“bash\_resist”: 8,  
“cut\_resist”: 8,  
“acid\_resist”: 8,  
“fire\_resist”: 8,  
“elec\_resist”: 8,  
“chip\_resist”: 22,  
“repaired\_with”: “alloy\_sheet”,  
“salvaged\_into”: “alloy\_sheet”,  
“dmg\_adj”: [“ripped”, “torn”, “shredded”, “tattered”],  
“bash\_dmg\_verb”: “ripped”,  
“cut\_dmg\_verb”: “cut”,  
“burn\_products”: [[ “nanometer\_fabric”, 1] ],  
“burn\_data”: [{ “immune”: true }, { “immune”: true }, { “immune”: true }]  
},  
{  
“type”: “material”,  
“ident”: “nanometer\_fabric\_rigid”,  
“name”: “Rigid Nanometer Fabric”,  
“density”: 10,  
“specific\_heat\_liquid”: 0.82,  
“specific\_heat\_solid”: 0.45,  
“latent\_heat”: 273,  
“bash\_resist”: 10,  
“cut\_resist”: 10,  
“acid\_resist”: 10,  
“fire\_resist”: 10,  
“elec\_resist”: 10,  
“chip\_resist”: 25,  
“repaired\_with”: “alloy\_sheet”,  
“salvaged\_into”: “alloy\_sheet”,  
“dmg\_adj”: [“marked”, “dented”, “scarred”, “broken”],  
“bash\_dmg\_verb”: “ripped”,  
“cut\_dmg\_verb”: “cut”,  
“burn\_products”: [[ “nanometer\_fabric\_rigid”, 1] ],  
“burn\_data”: [{ “immune”: true }, { “immune”: true }, { “immune”: true }]  
}