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Need advice please |
Originally Posted By: SAGE2009
Originally Posted On: 3/19/2009 6:29:32 PM
Last Updated On: 3/24/2009 4:38:50 PM |
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| SAGE2009 |
| 3/19/2009 6:29:32 PM |
| Topic: Kilns and Firing |
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| I'm new to pottery and I was watching someone on Expert Village (Youtube) spraying some WD40 in a bowl before making a coil pot. I'm assuming that WD40 will get on the clay. I was having problems with clay sticking to a mold tonight so I sprayed a little WD40 on the mold to help release the clay, but now the WD40 is incorporated in the clay. Was wondering if this could cause a problem when it gets fired at an earthenware low firing (around 06). Anyone know anything about this? Thanks in advance. |
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| STILLASTUDENT |
| 3/20/2009 9:54:12 AM |
| Topic: Kilns and Firing |
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Hi Sage,
I have heard of people using WD40 to help with releasing clay in a mold. I have not heard of any problems after the bisque.
I have never tried WD40, but I do not think that it will cause problems. It will probably burn off in the bisque firing.
I use wax resist all the time and it burns off.
I have also used mold soap when taking plaster molds of bisque fired pots. After I make the mold, I often just re-bisque the pots and glaze them like normal. |
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| STILLASTUDENT |
| 3/20/2009 10:02:25 AM |
| Topic: Kilns and Firing |
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Hey Sage,
You could also try this. Spray some WD40 on the plaster mold. Then sprinkle some baby powder or dry clay on the mold.
This will work if you are doing press molds. I would not try it if you are doing slip casting. I bet the WD40 would make it difficult for the plaster to absorb water. |
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| STILLASTUDENT |
| 3/24/2009 11:16:13 AM |
| Topic: Kilns and Firing |
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Silicon Mold Release Spray |
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Hey Sage,
I talked to the ceramics instructor at my school. He suggested using silicon mold release spray. It is used for all kinds of molds with the purpose of getting whatever goes into them out of there.
Let me know if you Give It a Try. |
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| STILLASTUDENT |
| 3/24/2009 11:24:32 AM |
| Topic: Kilns and Firing |
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Can Also Try Cooking Spray |
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| You could also try cooking spray like PAM. If you have some in your kitchen, give it a shot. |
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| GARMIN |
| 3/24/2009 2:25:29 PM |
| Topic: Kilns and Firing |
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| They sell spray just for this purpose. It is probably very similar to the silicone spray above. They will have it at your local ceramics supply store. If not there, you can order from axner |
| http://www.axner.com |
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| GARMIN |
| 3/24/2009 2:30:15 PM |
| Topic: Kilns and Firing |
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| SAGE2009 |
| 3/24/2009 4:38:50 PM |
| Topic: Kilns and Firing |
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| Thank you for all your responses. I asked my instructor if she wanted to fire these in her kiln, even with a little WD40 in the clay, and she said yes, so I am hoping she knows what she is doing. ;) She recommend using baby powder or baking soda or baking powder (I don't recall which one) to also help release clay. I did buy a spray at A.C. Moore that is meant to help release molds. It is some type of silicone. Thanks again. |
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