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So I'm trying to find a quick way to add random thickness, On the image below I don't want the selected faces to move on the Z-Axis. enter image description here

However I do want these faces below to Move along the X and Y Axis or normals. enter image description here

I was hoping to use vertex groups combined with a modifier but I couldn't get what I wanted with simple deform and vertex groups. I just want a quick and effective way to move faces along their normal's to add random thickness in selected areas.

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For the object you have in the picture, you can add two displace modifiers with a noise or clouds texture. Set one to effect the Y direction and the other to effect the X direction. Make sure Space is set to global.

Displace

You might like the results better if you first made a flat, segmented rectangle shape, then use a displace in only the x axis (Local Space this time), subdivide it, solidify it, and then use a curve modifier to modify the object like below. You can mess around with different displacement textures and amounts to get the look you're after.

enter image description here

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If you do not want to move the surface, click shift z. so it will only move in the x and y directions.

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  • $\begingroup$ you can use the Proportional editing with Random along with the shift+z $\endgroup$
    – rob
    Commented Jan 11, 2019 at 8:54

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