Perhaps if you post a picture of your mold and your soap and indicate the actual size and shape of the soap you prefer that would help.
Some people like soap that is a square block such as this:
While others prefer rectangular shaped soap that looks like this:
Then of course there are variations to desired sizes and shapes, which can be based on how one cuts the soap, as well as the actual molds used.
With the ED mold that
dixiedragon posted a link to, I can get a variety of soap sizes and shapes, depending on how I cut the loaf. But if I choose to fill the loaf completely, then cut the bars straight down, it makes for a very large bar of soap, too big for my hand. Here are some soaps I cut from a loaf from that mold just to show how a different cut can provide different sized soaps from that particular mold (but it's true of most molds):
I prefer big chunky soap, like the one on the left in the above photo. But that's not what's normal in the US, so to get a big chunky soap, I have to cut it that way myself. If you want a 5 to 7 ounce bar of a particular shape, you can plan that around whatever mold you use and cut accordingly. But if you use a standard 1-inch cut that so many multiple cutters are set to in the US, you may not get quite that much weight per bar unless you use a taller mold like the ED mold mentioned above. But I find that often thinner soaps warp, which I find unsightly. Or you can make your own molds out of corrugated plastic and try out different sizes before investing in another silicone mold. There is one video in my Media Album,
DIY Soap Mold related Tutorials on how to make one, and more on YouTube and various sites on the internet.
