I'm looking to create detail on a long, curved section of an architectural model made from a spline. I need to have several horizontal grooves in the span and maybe 25 evenly-spaced vertical grooves. I tried placing a bump map in the texture but couldn't get the pattern to repeat nearly enough times over the full span. Using the knife tool is hit and miss since I can't get exact spacing of 25 different vertical cuts (actually 50 parallel cuts) since I'd need to extrude each cut out somewhat. There must be a better way.