I'm trying to draw a weld seams... So I use a Brush Tool, a Depth channel active and the Additive paint checkbox turned on. But when I draw I get a plainly extruded stroke. Is there a way so that each brush drop (tick) will be overlayed on top of the previous one? Spacing parameter in Brush options doesn't help much. I use standard round alpha, maybe that is the problem? Do I need a specific alpha for a welded seams effect? thnx