Raku beetle sculpture fired in a microwave kiln

Nov 06, 2026 Last reply: 2 days ago 3 Replies
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To my eye the hardest part here is compressing a full raku cycle into kitchen equipment. The maker pulled it off by running a microwave kiln for about 12 to 14 minutes at 850 watts, with the whole firing process landing around 20 to 25 minutes. Having gone in with zero expectations, the maker came away delighted with this first attempt.



The glaze plan is split carefully. The wings carry a raku gold glaze and the face a semi matte copper, and a friend made the glazes while also guiding the firing, which seems a sensible setup to me. Once out of the kiln, the piece went into a cast iron pot filled with wood shavings. The fire was allowed to catch, the pot was covered until the flames died, and the piece finished in a bucket of water. Covering the burning pot creates reduction that pulls oxygen from the glaze, and that reduction is what gives the metallic finish; most of the sheen shows up only after the lid goes on.



The finishing details are what sell it. A rounded yellow rear shell is marked with dark crackle lines, while the front section and two large opposing horns wear an iridescent textured glaze that shifts among blue, bronze, purple and black tones in direct light. Dark grey legs curl beneath the abdomen.



One open item: the copper matte reportedly shows even more iridescence in real life, and the maker has said a shelf will still be needed for display. Worth noting too that the kiln is sold as XL yet is not very big in real life, which in my view makes it a neat fit for a single figurine like this.


The choice that stands out to me is covering the burning shavings until the fire dies. Most of the metallic sheen arrives only after that lid goes on, so that moment looks, to me, like where the finish is decided. The trade-off I see is that the maker cannot watch the reduction happening and simply has to trust the pot, which takes nerve on a first firing.

I would love to know about the quench and the colour. Did the copper glaze on the face show its colour before the piece went into the bucket of water, or did it only come through afterwards? That seems like the kind of detail that would help anyone planning a similar firing.

A small shelf in strong daylight would suit this piece well. The horn glaze shifts among blue, bronze, purple and black tones in direct light, so a sunny display spot would let that change be enjoyed all day, and it would also cover the shelf the maker says is still needed.

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