Last Updated: Oct 14, 2016 Views: 14
Thank you for contacting us with your question. I've spoken with Bill Gudenrath Resident Advisor, The Studio regarding your reticello question and here is his response.
To my knowledge, late 17-early 18th century Venetian reticello glass objects always have bubbles trapped at the intersections where four canes cross. The bubbles are nearly always square, rectangular with pointed corners-rather pillow-shaped usually.
Some contemporary glass makers prefer that the bubbles be spherical: Dante Marioni, for example.
Reticello can, with extra effort, be made bubble-free: this involves extra reheating and marvering to make both surfaces of the two elements perfectly smooth before fusing them together.
Please let me know if you have any additional questions.