Kiln opened this morning after the full 24 hour wait, cone 012 bent clean

I sell little sculpted animals at a couple of markets here in Ohio and that velvet black finish is exactly what I chased for two years before I got it consistent. The trick I landed on was watering my matte down slightly and doing two lighter coats instead of one heavy one. When I brushed it on thick I got this dry, chalky patching around the ears and tails, and once it got so thick it crawled right off a rabbit's nose the week before a fair. Two thin coats, plus a third dabbed just on the spots I want darker, gave me that soft suede look every firing. On the detail glaze thinning out, I started overlapping my glossy accents a good quarter inch past where I want the line to sit. The glaze pulls back during the firing anyway, so what looks sloppy going in comes out looking crisp. Also, ears. I stopped making them thin and started building them chunky on purpose, then they survive every time.

I make little animals for a winter market too and I solved the ear problem a diffrent way. I used to sculpt them true to life, all delicate points and thin edges, and I lost count of how many came out with a snapped ear tip or a chipped nose even when the firing itself went fine. Now I deliberately bulk up anything that sticks out. My bunnies have chunky rounded ears, my cats have stubby ones, and honestly customers seem to like the stylized look better anyway. Less heartbreak for me and I can wrap them for the market without holding my breath. On the waiting part, I found a trick that helps my sanity. I load and start the kiln in the late afternoon, let it run overnight, and by the time I want to peek the next day most of the cooling has alredy happened. It still feels long but at least I slept thru half of it.

One thing I'd flag for your next glaze round, that thin spot where the tie meets the body. I had the same thing happen on a scarf detail and it turned out my fingers were unknowingly wiping glaze off while handling the piece before it dried. Now I glaze everything first and touch the pieces as little as possable, holding them by the base only. Fixed the thin patches completly.

The successful attainment of that saturated, velvet black tone ussually indicates a specific interaction between the glaze chemistry and the kiln atmosphere, which is arguably as important as the glaze application itself. When we discuss achieving such a deep matte finish, the degree of reduction during the firing cycle plays a critically important role in how the iron oxides resolve within the glaze structure. I have observed that if the oxygen flow fluctuates even slightly during the peak temprature of the 012 cone, the resulting black will inevitably exhibit subtle patchy areas or a slightly oxidized sheen instead of a completely uniform appearance.

I really agree with the advice about keeping the matte glaze slightly thinned out. I saw similar issues when I tried applying it straight from the can and it looked patchy. My trick is to mix a very small amount of clay slip into the diluted glaze before I start brushing. This helps maintain a more even coverage across the surface, especally on those smaller areas. Otherwise, the drying process can sometimes leave uneven spots which I don't want to fix post-firing.