I noticed that recently many new and exotic Shofars have appeared on the market, and I decided to research their Halachic validity. What I found included many startling points, which I am sure will be appreciated by those who are learning the related Sugyos in the Dafyomi cycle.
A summary of my findings on the subject are available at www.dafyomi.co.il/rhashanah/discuss/ExoticShofars.pdf . I welcome any comments.
Best wishes,
N. Slifkin, Ramat Beit Shemesh, Israel