Arterial Spray Glass Company makes kilnformed glass pieces, using intensive glass-working processes that go beyond the kiln to "cold-working" the glass by sandblasting, grinding and polishing. We prefer a subdued matte surface for most of our pieces and the opaque glass that we use combines well with the extensive cold-working that we employ. Most Arterial Spray Glass Company works are formed in the course of three overnight kiln firings with cold-working in between. Arterial Spray Glass Company uses lead-free glass for most pieces, creating food-safe functional art.