Stitching curtain tape to voile -- machine, or handsew?

[ViolaTricolor]

I'm making some voile curtains for our bedroom, using sheer polycotton fabric and the transparent-ish Rufflette tape for the headings. I am just pondering whether to just handsew it rather than using the machine. I'm afraid the machine will mangle the fine fabric, but at the same time am wondering if the robustness of machine stitching is more desirable than handsewing. Any thoughts would be much appreciated; I'm a competent dressmaker but this stuff is a bit unknown for me.

I've never sewn voile curtains myself, but I know that you normally use the machine to sew on heading tape, because of the extra strength, as you say.
I'd try it out first on a spare piece, as it's probably not very heavy if it's voile and hand-stitching might be strong enough.

Use a new needle and as WWWY suggests sew a test piece until you get the tension right.

I have just taken some voile curtains up!

I agree that you need a nice sharp needle, use lots of pins to hold the tape in place (it has a tendency to shift about!) and go slowly.

I'm sure you'll be fine

Thanks everyone! This is all really helpful. I do need to do some careful experiments, I agree. A new needle is a good tip, I didn't think of that, and yes, that synthetic tape is extremely slippy. I'm not helped by the fact that my machine suddenly seems to be sewing a bit wonky, but I'll see what happens.

I have done 2 sets voile curtains. The voile I used already had the header tape and a weighted hem - I only had to do the side seams. Definitely use a sharp needle. I also found that I had to change the needle plate on my machine - to one with a small round hole instead of a slot. If I used the usual plate the fabric just disappeared inside! Experiment on scraps with your machine before starting the real thing.

Do you have a special foot that has feed dogs on it, to stop fabric creep? I would think this would help to stop the tape slipping.