I have a plastic detail part with a very small piece broken off one end of it - just a millimeter or two. I am sure it would be possible to glue it back on, but because of the very small size, I'm having trouble getting it into position with the adhesives I have tried. What I need is something that is very tacky and stays tacky for quite a while so I can get the thing positioned perfectly and then it will stay there while it dries. I've tried ordinary plastic cement but it doesn't work very well - not tacky enough to hold the piece in position. My experience with cyanoacrylate suggests that it wouldn't work well for this job. I've thought about using yellow woodworking glue, which does have a lot of tack and a reasonable working time, but I've never heard of anyone using it on plastic. Contact cement won't work because it has to be positionable - the piece is small enough that there is zero chance of getting it straight into place without having to move it around.
Suggestions?