Black metallic spots on fused glass backs

Home Forums FusedGlass.Org Website Help Forum Help Black metallic spots on fused glass backs

This topic contains 4 replies, has 3 voices, and was last updated by  fusefooey 2 years, 6 months ago.

Viewing 5 posts - 1 through 5 (of 5 total)
  • Author
    Posts
  • #10399

    fusefooey
    Participant

    what is causing ugly black metallic spots on the back side of fused glass.  Been teaching this for 10 years and never saw it before.  Tried everything.  Only thing different is using Wissmach glass (ran out of Spectrum).   Maybe something new added to our glue?  Alene’s quick dry.  Anyone else having a problem?  It has happened about 5-6 times.  I could post a photo, but don’t see a place to do it.  mcadele1@hotmail.com

    #13694

    glasspanes
    Participant

    I too have black spots appearing after fusing.   I’m wondering if it’s Wissmach glass as well.  Just switched to Wissmach never seen this using Spectrum.  Anyone out there have any idea what’s up?

    #13695

    fusefooey
    Participant

    A new case of black spots.  It is actually between the layers of glass and this time came to the surface through a bubble.  Tried to cover it with another piece of opaque glass.  It rebubbled and I drilled it out the black stuff with my Dremel., filled the hole with white frit and covered with more opaque glass.  Still not pretty and of course the back is still black.  No answers to this black stuff, yet.

    #13696

    Sherrylsf
    Participant

    Sounds like it could be glue between layers ….that did NOT burn off before the edges of the glass started fusing together .

     

    #13697

    fusefooey
    Participant

    It might be a combination of something new added to the glue or the slight texture to the Wissmach glass, which traps more bubbles.  My 20 minute bubble squeeze may not be enough. Think I will try a little longer bubble squeeze.

Viewing 5 posts - 1 through 5 (of 5 total)

You must be logged in to reply to this topic.

People Who Like Thisx

Loading...