Ah I think I misunderstood the 2p trick. I get it now.
I normally just put a flathead screwdriver between the stem clamp flats and lever the mouth open slightly. I use some inner tube rubber or thin card to make cover the sharp parts of the screwdriver. If you have big hands you can hold the body of the screwdriver and another convenient point on the stem all in one hand and squeeze. This opens the mouth. The other hand is then for bars.
I like the slender nut trick. Maybe the nut from an inner tube valve would work?
Ah I think I misunderstood the 2p trick. I get it now.
I normally just put a flathead screwdriver between the stem clamp flats and lever the mouth open slightly. I use some inner tube rubber or thin card to make cover the sharp parts of the screwdriver. If you have big hands you can hold the body of the screwdriver and another convenient point on the stem all in one hand and squeeze. This opens the mouth. The other hand is then for bars.
I like the slender nut trick. Maybe the nut from an inner tube valve would work?