Trying to make a material semi-opague

[patrickroykirkby]

I'm trying to make a material that fades out a bit, and I was some of it to be semi transparent. In the image I've included I want it to gradient somewhat, as if it were faded paint on glass.

[leeminardi]

If you are using scanline rendering you can use the visibility track. If you are using Arnold then use a gray gradient opacity map.