Yes, what type of tape? Painter's tape? Need something as non-residual-leaving as possible...
And by the way, I actually am going to punch into the film-image area. Reason being, is that I'm attaching a tri-color mask (like Dufaycolor, autochrome) onto another sheet of b&w film, and this sandwich has to fit in an ordinary 4x5" film holder. You can see my thread about it over in the alt-forum....
So for the time being at least, unless anyone can suggest something more elegant, I'm going to punch the film, tape it around the edges, put it in a film holder and then reassemble later with pins.
But yeah, what type of tape is recommended?