Creating a path with non planar moves for 3D printing

Grasshopper
1

Hi, I am trying to create a path for 3D printing that can be used for a lamp or candle holder. I would like the printer to move in the Z direction based on a set of points (15 in my example). As the nozzle approaches one of these points, I would like it to be repelled up or down, and then in the following lines, slowly revert to straight lines. I thought of using the “Tween” function of the Pufferfish addon, but I think this can be done in a simpler way. I’ve created a cylindrical loft using two circles, and I’ve tried dividing each curve of my contours into 100 points, but I’m having problems moving the points in the direction I want.

Print Path Example
Print Path Example1784×560 48.7 KB

Straight_pot_opening1.gh (13.1 KB)
Straight_pot4mm.3dm (93.8 KB)
Thanks for your help.

2

I just figured out that you can use “internalize data” to store the curves in the grasshopper file. DOH! Here’s just the one file instead of two.
Straight_pot_opening2.gh (13.0 KB)

3

quick question, if you program the 3D printer toolpath (that usually entirely lies on planes parallel to XY with step L) in such a way it has some variation on Z, whenever it moves in direction -Z isn’t the head going to compenetrate with the previously printed layers?
and when it’s going to move +Z isn’t it just going to extrude filament in air?

image
image1631×449 131 KB