The hide thing does work but we've also had some success rubbing the cow's afterbirth or milk on the calf. I think it is pretty important to get that calf to drink that cow's milk too because then everything about the calf starts smelling 'right' to the cow.
We usually lock the cow up in a squeeze chute with the sides off and get the calf to suck. If the cow doesn't seem to mind the calf being around, we pen them together in a little stall. If the cow wants to kick the calf, we put the cow in one pen with the calf next to her. After a couple/few feedings - the calf starts to smell like the cow and the cow also becomes used to that calf nursing.
It is hard work to get the calf over onto another cow and it doesn't always work. We usually do a few every year but so much depends on how easy the cow is to work with, how aggressive the calf is, and other issues. Sometimes it takes only hours (LOVE these) and other times, we are still messing with them a week later.