Unlit 3d mesh shader with overlay?

Hi. I’m really new to shader writing but I tried making a unlit shader that overlays all except the gui. Any time I turned on Ztest Always I got the effect I wanted but I could see the insides of the mesh (some transparency?) which I don’t want. Anyone know why please?

bump

I have same problem here,
anyone help?
Tried
“Queue”=“overlay”
but not work :stuck_out_tongue: