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#21
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Firing Paint Questions REPORT
"glassman" wrote in message ... DOH! I have this box of leftover paint bottles I inherited. How do I know which ones are firable? Here's some of the paints I have... Lefranc &Bourgeois (colors Vitail) Lefranc &Bourgeois (vernis gras colores) All Craft Powders Are these firable to 1200? -- JK Sinrod www.SinrodStudios.com www.MyConeyIslandMemories.com |
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#22
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Firing Paint Questions REPORT
Glassman@work wrote: "glassman" wrote in message ... DOH! I have this box of leftover paint bottles I inherited. How do I know which ones are firable? Here's some of the paints I have... Lefranc &Bourgeois (colors Vitail) Lefranc &Bourgeois (vernis gras colores) All Craft Powders Are these firable to 1200? -- JK Sinrod www.SinrodStudios.com www.MyConeyIslandMemories.com DONE of those are fired paints. |
#24
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Firing Paint Questions REPORT
wrote: glassman wrote: Report on firing black Dekka paint on yellow GNA. Fired to 1200. As it approached 1100 or so I peeked and the black started to disappear. Now all that's left is faint white where the black used to be. What did I do wrong besides doing it myself? Wrong paint? Temp too high? Ready to try again. -- JK Sinrod www.SinrodStudios.com www.MyConeyIslandMemories.com I thought Dekka paints were only fired in house oven to around 250 degrees. Scratch WRONG Dekka's are NOT heated at all. |
#25
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Firing Paint Questions REPORT
Paint is applied and heated to about 150 in a normal household oven.
Guess you could call that heat treated, no? No, it's called rapid drying - reducing the chance of humidity and dust messing up the surface. Modern automotive paints for repainting are sold thick and you must buy a thinner matched to the temperature at which it will be applied - use a low temp (50F) rated thinner at higher temps (80F) and the paint will dry so fast it will not level and will show seams and spray strokes. Use a high temp rated at low temp and it will take a long time to dry, may pick up dust and bug marks, and may sag. For what it's worth, ordinary "enamel" or laquer paints will normally feel slighty slimey or slick if a drop is rubbed between the fingers while firing paints (as opposed to those that are sometimes baked) that contain glass will normally have a very slightly gritty feel to them although this depends on what was used to make the pigment flow which can be a gum, like gum traganth, which is diluted with water, or an oil, like pine oil or linseed oil, which is diluted with mineral spirits, terpentine, or alchohol. Both types of these additives bind the pigment, making it flow when wet and stick when dry. All are burned off at some point when fired to glass melting temps. Some are also used as media for cold paint in which case drying is from evaporation of the solvent and aging of the oil - some oils are non-drying, unboiled linseed oil being one, and need additives to dry. -- Mike Firth Furnace Glassblowing Website http://users.ticnet.com/mikefirth/ wrote in message oups.com... Vic wrote: wrote: glassman wrote: Report on firing black Dekka paint on yellow GNA. Fired to 1200. As it approached 1100 or so I peeked and the black started to disappear. Now all that's left is faint white where the black used to be. What did I do wrong besides doing it myself? Wrong paint? Temp too high? Ready to try again. -- JK Sinrod www.SinrodStudios.com www.MyConeyIslandMemories.com I thought Dekka paints were only fired in house oven to around 250 degrees. Scratch WRONG Dekka's are NOT heated at all. Really...here's a brochure from DEKA on the paints...which have been discontinued by the way. http://www.asgs.com.au/asgs/deka/dekacat1.jpg Paint is applied and heated to about 150 in a normal household oven. Guess you could call that heat treated, no? |
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