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Trouble with Ceramit

Hello All,

I am befuddled with a job involving Ceramit. I am making a large 3"
Star shaped plaque that will have Ceramit in certain places. I am
matching colors from another similar plaque. I bought the ceramit
kit from Stuller with basic colors, and some other colors from a
local supplier. The problems are two-fold. The green bubbles when
it is curing at 200 degrees. Even if I do very thin layers, no
bubbles when I put it in the oven, filled with bubbles when it comes
out. The second problem is colors staying the same before and after
firing. I carefully mixed a light blue color, did test strips, but
when I fired it it changed color dramatically, from an aqua blue to a
dull grey blue. After many test strips and attempts, I finally had to
burn it out and start over. The oven is kiln with two pyrometers so I
don’t think I am firing too hot. Also, the blue color separates when
fired so I get a dull grey with little marbled areas of dark blue,
even after mixing well in my little Dixie cup.

I have checked the archives, and it seems the two main threads cover
types of enamel substitutes or that ceramit seems great. Nowhere can
I find how to troubleshoot it. I am pretty certain we want to stay
with ceramit, but I just need some advice from someone out there who
has been using it!

Thanks in advance!!!
Mary LInford
Blue Star Wax Carving
mary@bluestarwaxcarving.com
206-780-3602

Mary:

I bought about 25 -45 ml Porcelaine #150 I use some of the colore for
my Miniature Arabian Horse.

Thay say to bake at 399* F. I found it came out darker at 300 instead
of 250* so I run at 250*F.I bought the Porcelaine from a Artist
Supplier here in Torrance.

The Co. Name os Pebeo which you can find out on google. It is made
in France.

Yours Billy S. Bates
royalminiatures.com

Dear Mary,

Two things I might suggest. First make sure you mix the ingredients
with a digital scale. The proportion is one part color to two parts
catalyst. I’ve done a 50/50 mix by mistake and it still works but
takes a longer time to dry. Second, use less heat. No gas heat. I’ve
used a spot light with success. It will also dry by itself also with
time at room temperature. Closest thing to colored epoxy I’ve found.

My two cents & best regards,
Todd Hawkinson

Hi Mary

I used to use Ceramit years ago with an airbrush with a medium
nozzle opening for making brass pins and never had any problems with
bubbles and I got brilliant colors using a bright white paint in the
background. I was actually using car paints also with the Ceramit to
get different colors. Auto enamels also can come with metal flakes.
Looks good in some situations. It’s all just paint-enamel. Maybe
those particular colors you are using just need to be built up in
layers to avoid the bubbles and dulling of color. I also used an old
turkey roasting oven for curing-nothing fancy.

Hope this helps - Margaret in Oceanside

Mary,

I used Ceramit to good advantage years ago and liked working with it
and the transparent colors especially. I never used any baking at all
to cure and nothing hotter than a light bulb when in more of a
hurry. Preferred the room temp. curing, actually. You might try that,
especially with the green, and see if it helps.

Good luck
Pat