What is the best way to combine small slivers of soap into one bigger bar of soap without the slivers flaking off?
I was thinking a press (like a tortilla press) might do the job, but should I soak the soap first to make it more malleable?
For what it's worth, here's what I've been doing successfully for the past several years.
I make one cake at a time. When I begin using one, I start another so it's dry and hard by the time the first one is just a sliver. I have a supply of soap chips I made by grating all the hotel bar soap I collected when I was traveling at work, to which I've added all the slivers in the house which I'd been saving so I have a generous supply available.
Some types of soap are more malleable than others. One method is to soak them and press them together with your bare hands. For harder types of soap, let the soap sit on a damp washcloth or sponge for a few hours, then using a toothpick or some other pointed object, score the surface of the soap, then press them together. This is really similiar to attaching a piece of clay to another.
Another method to combine small pieces of soap is to cut them into small pieces, heat them up in a microwave, then let that sit for a week or so. For more details go to this instructable on how to recycle soap
Hope this helps!
Just put the soap slivers in a sock and use it like soap-on-a-rope.
For example In the US we have a problem holding on to soap in the shower and would rather not bend over to retrieve a dropped bar (mainly in a public shower!) so we put a leash on our soap to keep it handy. Check out this link for an example: Wednesday Wisdom – Soap on a Rope.