I, too, (see Sally D. on Feb 12) notice how different my old thin-fire paper was to the new one. This new one is much harder to wash off, and does seem to tear with movement of the glass heating. It does not have Bullseye written on it, although it was bought from CR Loo in Oakland as Bullseye...but as I am now in England, it is a long way to go back and ask...! I also read that it should have a shiny side and a not-shiny side - mine looks the same both sides.
My particular problem of the moment may be to do with the paper - or it may be to do with the glass. I have twice used a 3mm Bullseye clear irid as a base for a tile, irid side down on the paper.(Shelf was kiln-washed as well) The irid base had one other 3mm layer of plain transparent on top),
First time the firing was a normal quite conservative tack fuse, with a slow ramp up and holds to allow a good bubble squeeze - and the second firing went up to a full fuse, again with bubble squeeze holds.
Each time the glass on the bottom (irid side on paper) was completely pitted with a million popped bubbles or as if it had been shot with a million tiny bullets - sort of like an orange skin.
Then if you look from the top of the glass it looks as though there are a million bubbles as well as the 'orange skin' effect seen from the base. I took some pics. but cant work out how to post them. Anyway - it is quite horrendous! There is also a piece of Tekta beside the irid - and that is perfect - no bubbles, no pitting.
Is it possible I have a bum piece of irid? Does such a terrible thing ever happen??!!!
Or is it some reaction with the paper? (although a colored irid down is OK)
I now am wary of using this piece of irid - AND the paper...frozen into non-action am I!!!!
Thanks for any help!