I'm posting here on a related subject. We're trying to create a more sophisticated system for city curbs that include gutter, curb (painted & not, with small and large drops), adjacent area (grass or concrete), and sidewalk. I've created segments for each of these (which are about 12 feet from front of gutter to back of sidewalk), but on anything other than straight curbs the different elements do not slice/weld together. Based on your previous suggestion, I'm beginning to think the only way to control color/material changes on a non-straight spline is to use the Selector operator? And I'm not seeing a solution for a drop curb that happens on a non-straight spline (since they require different segments & generators). Any chance the just released update can weld different segments together properly based on Material ID Limits? We model based on LIDAR point clouds, so straight lines are hard to come by and all our curbs have gaps. I've attached rendered samples with notes as well as my testing max file. Thanks!