thank you !!! thank you so much for taking the time to really explain that! it makes sense now....i have been trying to do on solids not surfaces and have been getting the wrap round which means no after manipulation. ....plus as you say the resulting curve has a ton of points and that is ok makes me feel better.


thank you again.....ps i would be honored if you could offer your solution to the attached images.







https://www.sinkwarehouse.com.au/products/fiona-basin-mixer-black/


the black one shows more clearly the under belly curve that transitions into the base flat neck.


best regards Neil

If you really want to take advantage of manipulating the projected curve --where the surface is a cylinder, or something that will result in two projected curves -- just copy the surface (solid) to one side, cut it in half (eliminating the back side), project and manipulate the curve until you have what you want, then move that curve back onto the original surface. Remember to set the endpoints.

after reading your last note that is exactly what i have been doing thanks again....ps i have spent more than 4 hours trying to make this tap in an intelligent way...fail after fail...with imperfect surfaces.