construct any rounded solid or curved surface and try to draw a curve originating from it.
Starting from the first point there exists an option to draw the next point based on the normal.
So far so good, but there's two problems.
1. after the second point you cannot draw the next one based on normal.
2. you cannot draw a construction line based on the normal.

Hi niko - you can draw a construction line off of a surface normal. If you want to place more than just the 2nd point of a polyline on a surface normal then the easiest way is to start out by making a construction line along the surface normal initially before placing any points and then you will be able to snap as many points as you like on to that construction line.

Let me know if you are still stuck.

In order to make a construction line that follows the surface normal make sure you have not disabled the option for it under Options > Snaps > Straight snap options > "Surface normal snapping".

Also make sure you have "Straight Snap" enabled in the bottom toolbar (next to "Grid snap", and "Object snap") in order to get this kind of snap.

- Michael

Also here's a quick demo video showing creating a construction line off of a surface normal:




If you're doing something that behaves differently maybe I will need to see the model file that you're working on to give you some more information.

- Michael

never mind-brain fart....
it works even after placing initial points....I guess I just have to hover over the point for a sec.
Thanks Michael.....can't wait to see the match command ;)
Do you have a variable fillet planned for version 3 also?

Hi niko, yes I do want to work on variable radius fillet in v3.

- Michael