I am making a model with a hood that has a very visable fabric weave (can see threads) I was wondering how do i add a continues alpha in zbrush. Doing it square by square in dot made seems insane
Use the Surface Noise feature. You can tell it to use your alpha and can then adjust things like how often it repeats on the object. Once satisfied you can mask off parts of the model you don’t want to receive the noise and finally convert the noise to geometry.
See the What’s New PDF’s in your Documentation folder.