Super spray and streaks

[janesglassart]

I’ve been slumping wine bottles for a while.  I first coat the bottle with Super Spray to avoid devitrification. Sometimes a bottle comes out of the kiln with streaks.  I melt the bottle at 1425 degrees.  It’s happening more and more and I can’t find a solution.  Thanks for any help!

[Vernelle]

How are you applying the Super Spray? I don’t have a problem when I spray it on and not brush on.

[janesglassart]

I use a sponge type brush. I have used a regular paint brush but it was worse.  What do you use to spray it on?  Do you get a thick or thin layer when you spray?

[Vernelle]

I have the badger air brush system which you can get at Michaels or a craft store.  You can adjust the thickness of the spray but a thin coat is all you need.  There are other sprayers out there that can be used.

[janesglassart]

Thanks for your help. I’ll try it today. I had also read that temp. was a factor.

[Vernelle]

With Super Spray you just have to go above  1300 and not above 1700.

[Stephen Richard]

Given the cost of these over glazes, you might think of using borax instead.  I have given some information on my blog.

http://glasstips.blogspot.com/search?q=borax

Stephen Richard

blogs at: http://www.verrier-glass.blogspot.com/   and  http://www.glasstips.blogspot.com/

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