Thanks to everyone who responded. jointpushpull is the perfect solution for this.

@thomthom said:

0.1 might very well cause SU to have a fit. If you experience problems, try scaling up 10 or 100 times before you do the operation - then scale down again.

I have always faced the problem with changes below the 1mm range of SU. So, I usually scale it up, perform the required ops, then scale it back down. Still, thanks for that tip.

I have a surface which I created using the Simple Loft tool (see the image below for my example surface). Since this is considered to be an infinitely thin surface, I wanted to turn it into a 3d object which has a thickness of, say, 0.1mm.

Is there any script to do this? Or any other fast method of getting it down, without having to manually copy the surface and join it?