The best way to find out is to pay attention to the baking instructions on the packaging of your polymer clay. Timings will vary depending on the width and size of the piece of clay you are baking — be that a jewellery bead , charm or decoration. For more accurate timings, measure the thickness of your polymer clay. So, for example, with a jewellery bead, you would measure the height top to bottom as this is the thickest part of the bead.
With a charm, measure the depth front to back. And with a sculpture, take the measurement of the widest point of the piece on the longitudinal axis. The general rule of thumb is that 6mm is the standard when it comes to baking times. And so forth… Generally, baking for a slightly longer time than required is better than not baking for long enough. If you reach the end of the suggested baking time and you think your piece is still slightly soft, avoid the risk of burning it and remove it from the oven to allow it to cool.
If not, put it back in for a few minutes, but keep an eye on it. In fact, you should never leave your oven unattended when baking polymer clay. But it won't feel done. Polymer is quite soft when first removed from the oven. It needs to be cooled completely to reach its final hardness. Roll a bit of your clay mixture to the same thickness as the piece that you're baking.
Bake your sample. Cut or break when completely cool to examine the interior for crumbling or brittleness. Check the packaging for basic instructions. Then ask yourself, "How deep is the thickest layer of unbaked clay? The duration of your baking time depends upon the depth of the raw polyclay layer. If you've lost the package, but remember the brand, you can look up the correct temperature and cooking times in the chart below.
It includes Fimo baking instructions and also applies to baking Sculpey in a toaster oven. In the chart, oven baking times that have been taken directly off the manufacturer's package are written in black type.
The orange type is an estimate for those manufacturers that do not give explicit baking instructions for thicker layers. These companies print something nebulous about baking their polymer longer for thicker layers. It is recommended that you bake a test sample first so you don't burn or under cook your piece. This material softens a bit in the oven before the polymerization process is complete.
This can cause flat, shiny spots if you're baking on a hard surface. To keep the shape that you want, you need to rest your beads on a surface that conforms to the bead or support it without resting it on a flat surface.
I like these beading racks because they fit easily into a standard toaster oven. Longer baking will NOT burn your clay. Longer baking will also lead to stronger clay projects. If your clay is burning, the temperature of your oven is too high. That being said, longer bake times can cause some colors of polymer clay to darken.
We always suggest that an oven thermometer be used when curing the clays to ensure your oven is reaching and staying at the desired baking temperature. Video It depends on the thickness, but yes, polymer clay does stay somewhat flexible. Polymer clay, like Premo Sculpey for example, remain flexible when baked, especially when thin. Polymer is quite soft when first removed from the oven. It needs to be cooled completely to reach its final hardness. When polyclay is cured correctly your cooled piece will be difficult to break, but if it is thin it might bend easily.
Soft Effect Leather Effect. Polymer Clay Books Jessama Tutorials. How do you bake clay in the oven? It's important to understand how you bake clay in the oven accurately. Sculpey For Premo! Additional Sculpey Baking Instructions It is suggested that thicker pieces be initially baked for 15 minutes, then another 5 minutes, another 5 minutes, etc.
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