Master Glass 

Thank you. I will pass on your comment to Petri, the artist in the video. Good luck with your own work.

Thank you for your comment. I have forwarded it to Petri, the artist.

Thank you for your comments. I originally made a longer film (about 30 minutes) which showed more of the different stages and techniques (and had no music!). This shorter version was principally designed as a promotional video for Petri's website.

@@topgov47 Don't be shy; please put up the longer version Andrew!

@@threethrushes Ok. Sometime in the next few days.

@@topgov47 Thanks; subscribed.

Thank you for your comment and questions. I will contact Petri and find out.

Here is Petri's response: We buy in the grisaille from a company in the states called Reusche. It is a mixture of metal oxides, flux and ground glass. Here is a link to the material data sheet for a similar (but not exactly the same) paint as I used in the video. edhoy.com/pdf/DE404(1).pdf I couldnt find the data sheet for my glass paint but if you contact Reusche & Co and ask for the DE 405 data sheet, I’m sure they would oblige. We take the glass up to 650 degrees and let the kiln cool naturally unvented. A complete firing cycle in the kiln on the video would be half a day.

Thank you so much for the information!!

I have asked the artist and he confirms that he prefers not to use gum Arabic for tracing as it tends to make the paint sticky and prevents it flowing as smoothly as he likes. Some other artists do add a small quantity, but Petri prefers not to.

@@topgov47 thankyou for answering, i had the same question. So what is it that he uses for tracing? Vinegar or water? Im starting to learn and would like to know what is best to mix the paint with (water, vinegar, and gum arabic) for each step of the process. I'd greatly appreciate if you can explain a litttle more on this aspect.

@@hectorrodriguez655 Hi Hector. I'll ask Petri and get back to you.

Here is Petri's reply (if you do not understand his reference to Dr Who look it up on the internet): I use vinegar (technically glacial acetic acid diluted with water) for the trace paint. For the shading paint I use water and gum Arabic. If you do choose to buy glacial acetic acid DO NOT SMELL IT! It is potent. Take great care and wear protective clothing. You can get fairly good results with white spirit vinegar. When diluting the acetic acid you need to let it stand a day or two before using it as it doesn’t mix evenly immediately. When it looks clear and there are no Dr Who special effects going on in the bottle ( you will know what I mean if you go down this route), then it’s ready to use. Good luck.

Thank you. I believe the artist uses it in order to give him more control over how the paint 'flows'. However, I will check with Petri and let you know if his answer is different.

Thank you. Appreciate it! @@topgov47

I have now heard back from Petri. He adds that: "more importantly gum arabic helps the paint stick to the glass so that you can better control the removal of the paint once it has dried. Without the gum the gentlest brushing of the dried paint would completely remove the paint so you wouldn’t be able to lighten it gradually."

Thank you s much@@topgov47 ! This has been really helpful. Appreciate it :)

Thank you for your query. I shall forward it to Petri and let you know what he says.

Petri has replied as follows: A regular oven won’t work because you need to take the glass up to 670 degrees Celsius. This is way beyond the capabilities of a domestic oven.