I've tried a lot of methods, and the most similar recipe is.
Glass 70.
Kaolin 30.
Fine silicon carbide 1.
Copper carbonate 5.
The effect is as shown in the picture.
The problem is that the presence of SIC, in the formula can also cause copper carbonate to turn red in the glaze in an oxidizing atmosphere. Is it possible that it does not need to be made with SIC?
The first picture is the sample picture, and the other two are the results I tried.

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Need help.

This is my first time to use this website. I'm not familiar with it yet. I can't seem to find the pictures I uploaded.

I'm new to this forum but I have seen similar situation.

To add an imagine I have done in this way:

1) press the little icon with the mountains,

2) than forum will open an other window and you press "scegli file" (written in your language I imagine: I'm italian)

3) choose the file imagine and select it

4) you press upload file

At this point the imagine appear in the test where you are writing.

A second possibility is to press "scegli file" down on the left and than you do the same

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