Hello,

short question, how can i make an armor which has an custom model?
Thanks 

Hello!

Before I answer ---> start learn to find information by yourself, it's not hard to do it. 

Now look:
Use GeckoLib, it has a lot of useful features and 3d armor too.
The first thing you need to do is install BlockBench GeckoLib plugin ---> Then create your armor and export it as GeckoLib Model, you model should have name "example_armor.geo.json".

Now just follow this GeckoLib guideline to get your armor render ---> https://github.com/bernie-g/geckolib/wiki/Armor-Animations

It's pretty easy thou.

In few words:
-You have to public class your_armor_item extends GeoArmorItem implements IAnimatable
-Then add animation controllers into your_amor_item
-Then create renderer class - remember to keep bone names exact like you named it in BlockBench(example: this.headBone = "bipedHead";) if you don't do this - game will crash when you try open inventory or switch to 3rd person view  when you wearing your armor.
-Now it's time to register renderer in your main example_mod.class.

All of these steps are in GeckoLib guideline I gave you.

Good luck!

-A