Geometric Clay Christmas Decorations

Geometric Clay Christmas Decorations

My love of geometrics continues with these cornflour clay decorations. The can be used as individual ornaments, or strung together as a banner or even as gift tags!

Geometric Clay Christmas Decorations

I have fond memories from childhood of helping my Mum make large batches of play-dough for the playgroups she worked with. Unlike salt dough, this cornflour clay recipe needs heating in a saucepan, but it can air dry and produces a lovely smooth, bright white finish.

Geometric Clay Christmas Decorations

You will need:

For the Clay:

-1 cup/250ml  bicarbonate of soda (baking soda)

-½ cup/125ml cornflour (cornstarch)

-³/₄ cup/185ml cold water

-Saucepan and spoon

-Cup measures / weighing scales

-Mixing bowl

For the decoration:

-Rolling pin

-Grease-proof paper / baking parchment

-Kitchen knife


-Plastic drinking straw

-Pencil and Gold paint marker

How to:

To make the Clay

1.Mix the Cornflour (cornstarch), Bicarbonate of Soda (baking soda) and water in a saucepan. It will take a few stirs for the mixture to come together, but it should turn runny.

2.Put on a medium hot stove and continually stir until the mixture thickens. If you stop stirring, the bicarb just sinks to the bottom and you risk it burning.

3. It eventually comes together in a dough. Remove from the saucepan and place into a bowl and cover with a damp cloth or paper towel until cool enough to handle.

4.Knead the dough, using a little cornflour to stop it sticking, until its smooth. You can make the clay ahead of time put it in a sealed plastic bag along with the damp paper towel and keep in the fridge until you need it.

Geometric Clay Christmas Decorations

To make the decorations

1.Working on a piece of baking paper or parchment, roll out your clay to approx 5mm. I’m using my polymer clay acrylic roller as it gives a really smooth finish.

2.Using a sharp kitchen knife (or polymer clay blade) cut out as many irregular geometric shapes as you can! I just free-styled it, but if you struggle, cut out a 5cm square, then cut off two opposite corners at different angles. Of course, you can just use cutters for more traditional shapes.

3.So you can easily hang your decorations, make a hole using a plastic drinking straw.

Geometric Clay Christmas Decorations

4.Leave on the parchment to air dry over night in a warm place. Alternatively, you can bake them in the oven on a low heat (100°C /210°F) for 45-60 minutes. To check if they are baked, press down in the middle of a shape and if it is still a little soft, bake for another 5 to 10 mins. The only negative from baking in the oven is that the back can brown a little, especially if your oven has hot spots like mine!

5.Once they are dry, use some fine 400 grit sandpaper to smooth out the edges.

6.I drew lines in pencil first, until I was happy with the design, then went over them with pen. I also went over the edges. Then they are ready to hang!

Geometric Clay Christmas Decorations

If you have a go at making these geometric clay Christmas decorations let me know by commenting below, or message me on on TwitterInstagram or Facebook! Happy festive Making!

Geometric Clay Christmas Decorations


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