When
using textured glass there is a decision to be made on whether the
smooth or textured side is up.
Oddly,
the largest, but thin bubbles occur when putting the smooth sides
together. it seems that as the glass is not perfectly flat, it
holds air within the fused piece.
The
fewest bubbles seem to be promoted by placing the rough side down on
all pieces. This is easy as cutting is done on the smooth side
anyway, and so no reverse cutting is required. It seems that the
rough side of the glass provides ways for the air to escape during
the bubble squeeze although it does promote micro bubbles within the
glass.
If
more bubbles are desired, you can place the textured sides together.
That seems to allow the majority of the air out, but still leaves the
micro bubbles from both sheets.
I
have had good results following the Bullseye recommendation to keep
the smooth side up on all layers.
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