WarmGlass.com

Hi everyone...
I have looked at all the related posts about haze and devit, as well as on other searches, and I am unsure if my problem is devit. I have attached pictures of what is happening. I have 2 different pieces that were tack-fused Tekta-side down, all Bullseye glass. Then both pieces were draped Tekta-side down, one over a stainless bowl, and the other over a ceramic pottery bowl. My kiln-wash is applied with a sprayer, and is the same wash I used for the shelves. Where the pieces are touching the bottom of the bowls, there is no haze, and the areas of the glass that hadn't touched the bowls during the process do not have haze, just the part that bent is hazy on the side facing the molds. I clean my glass using vinegar and a clean cloth. Here is the schedule that I used:
r1 - 400hr to 1265 - h20m
r2 - AFAP to 960 - h60m
r3 - 150h to 700 - off

I realize from further reading that I should have made the anneal temp 900. Could this be part of the problem? Although, I have run this schedule for 1/4" float, with the same result.

Thanks in advance for your input!
Lisa

Looks to me like your glass is picking up texture from the mold. R.

Thank you Roseanna,
I ran this by Valerie Adams also, and she agreed that it looks like texture from the mold. She suggested a different schedule for me to try, and I am going to give it a go.
Thanks for looking and replying!

Lisa

On that shape you should be able to do it at 630ºC maximum, Possible 610ºC with 30min soak. You are doing it at 685ºC
Lower temperature usually leads to less marking on the bottom of the mould.

Stephen Richard wrote:On that shape you should be able to do it at 630ºC maximum, Possible 610ºC with 30min soak. You are doing it at 685ºC
Lower temperature usually leads to less marking on the bottom of the mould.

Hi Stephen,

This is similar to what was suggested to me. I may sandblast them both and have another go at it.

Thank you for your suggestion! I really appreciate the input

Lisa