Today I’ll show you how to duplicate an item with one-part clay mold. Making an one-part mold is a lot easier than making a two- or multi-part mold. So this making this clay mold is a lot easier than making a gelatine mold in Part 1. But just like gelatine mold, it also has it’s own weaknesses.

This is all you need for making a clay mold, soap water (release agent), modeling clay, and the item you want to duplicate.

There are many kinds of modeling clay available in the market. Such as ceramic clay, oil-based clay, polymer clay, paper clay…etc. The clay I’m using is oil-based play clay. I got it from the craft area at my local dollar store.

Because the oils do not evaporate as does water, oil-based clays remain malleable even when left for long periods in dry environments. That means you can re-use it over and over again. It is very good for poor man like me.

This is the item that I’ll be duplicating. It’s a NEKO! =D

This cat has balls! XD

First step is dip the cat into the soap water. The clay I’m using is a bit sticky, so it is easier to remove the cat from the clay if it is wet.

If you aren’t using oil-based clay but water-based like ceramic clay or paper clay, you can use baby powder or corn starch as release agent instead of water.

Wet pussy =P

You only need a thin layer of water over the item. Too much water is bad.

Now press the cat into the clay before it dries.

When you press the item into the clay, you’re simply pushing away the clay to let the item in. So there will be some gaps around the item.

But don’t worry. All you need to do is press the clay slightly to close the gaps.


Then carefully remove the item from the clay. Now the clay mold is done!!! =D

The next step is mixing the plaster. I use Plaster of Paris which I bought many years ago. It is cheap, less then CAD$6 (US$4.6) for 2kg.

Don’t forget to read the mixing instructions!
“2 parts Plaster of Paris to 1 part cold water”

If you want to make the plaster stronger, you can add some white glue into the mixture.

To prevent air bubble forming on the surface of the final product, instead of pouring in the plaster all at once, I coat a thin layer of plaster on the surface with a small paint brush first.

**Don’t forget to wash the brush before the plaster cured.**

Then fill the mold with plaster.

After 25-30 minutes, the plaster cured!

Now you can carefully take the final product out.

It looks great!!!

There aren’t any air bubble on the surface at all! =D

Oh wait…

There are two air bubbles on the tip of both ears. One big one small… OTL

But still it is a huge improvement over the gelatine cast I did last time. =D

**The gelatine cast I did last time, with tons of air bubbles**

Overall I think it is a big success. This one-part Clay mold is definitely the easiest mold to make. But as you can see, you can only duplicate one side of an item. If you want to duplicate both sides of an item, you need to use a two- multi-part mold which I’ll try to do in the “Poor man’s Modeling Part 3” next time..

“One small step for a poor man, one giant leap for poor-mankind.”