Alpha on .obj just like a .png

[Jack23625323tnx9]

Hello, I hope someone can help me. I play a game called rust I just bougt substance painter to try and help me make better skins. I was just using the defuse.png file in Gimp and it wasn't that bad... Example if I take the defuse.png of a face mask paint on it copy a texture to it whatever if there is a part of it I don't want to show up be clear or see through I just use the wand and paint over it in alpha and when I load in the skin it looks like that part is missing how do I do that with an obj file in substance painter can someone please link a easy to folow video. thank you for your time.

[GeoffroySC]

Hi,

Could you add screenshots to illustrate what you're doing and examples of what you want. For now, it's unclear what you are trying to do. 

Kind Regards,

Thank you,

Geoffroy SC