How do I make a transparent/translucent item/texture? Like glass.

I read to do the "alpha channel" in photoshop. But not works for me. I opened my texture in photoshop. In the "channel" tab I unchecked "R, G and B" and have left only marked "alpha". I have saved my texture and I have compiled. But my item has not become translucent/transparent.

I want to make an item that is translucent/transparent, like glass.

Do I have to do something with VTFedit, or Photoshop?

Could anyone tell me how to do an item/texture that is transparent/translucent?

I would be very grateful.


Thanks in advance for your time and effort friends.

How do I make a transparent/translucent item/texture? Like glass.