So the materials I used to form the molds are:
Oyumaru of course, pair of chopsticks, a blade, metal ruler, quilting ruler and a container of boiling water. As usual, first I put the oyumaru into the hot water for a few minutes to soften it up.
Working on a piece of paper, I kinda split the oyumaru into halves and rolled each piece into a ball. I then flattened each piece with my quilting ruler.
The size of the mold will be dependent on the waffle that you want to make. I ended up flattening it to about 2 inches in diameter for the bigger mold and 1.5 inches for the mini mold.
For the bigger mold, I used the edge of my metal ruler to create perpendicular grooves on the flat oyumaru. The lines are about 5mm apart. I did let my oyumaru cool a bit before doing this step.
First horizontally... I initially used a 1.5-inch piece which turned out a little too small..
My final sizes.
I also made a smaller mold for mini waffles with another oyumaru using the reverse side of my blade.
And thought it would be useful to create a base for shaping the mini waffle...
To make the waffles, I used some Grace + Cosmo clay combo and a bit of yellow ocher acrylic paint to tint. For the bigger waffles, I split the tinted clay into 1/2 teaspoon balls.
Before using the molds, I used some baby oil to prevent the clay from sticking to them. I took a ball and pressed it into one of the big molds.
Then I covered that with another big mold, and smooshed the 2 molds together. I tried to get the edges thinner and the center thicker.
Then, I carefully peeled the clay away from the mold. And there it was! A flat waffle piece.
Since the piece was big enough, I kinda shaped it into a bowl using just my hands. For the mini ones, I did use the shaper base to help me a little. I then let dry the clay pieces for 1 day.
Drying in progress.
Ice cream waffles
And.. the mini ones. =)