'Topo' material: Elevation contour lines to use while sculpting landscapes. Designed for sculpting, not rendering.
New 3.0 Version, renamed to 'Bandsaw'. New: Color by slope instead of elevation. Zoom into the slightest changes in slope angle. Tilt world axis! Good for tilted strata or overhangs, or perhaps mapping the slope of a road Shaded contours, more line controls, cleaner panel layout. 100's of nodes in this material for the dweebs to mess with; hopefully they like vector mathematics!
New 2.0 version, tutorial on youtube: https://youtu.be/jgywUTDsVDU. Same as embedded video below. Its 14 minutes long and I walk through how to set it up and take advantage of all the features. It has sound and my boring voice but at least the sound is high quality. :)
New features compared to 1.0: -Now lines are the same thickness regardless of the slope. Very flat slopes used to spread the lines widths so much they would completely spread out. This took a lot of tricky math but the results were worth it. -Line width control. -Turn lines on and off. -Renderable. (this is supposed to be a tool for sculpting but renderings look really nice.)