A damaged shofar
Cut across: fine, if enough is left to hold
Split down its length and glued — pasul
Restrictivepasul — unfit.
Pieces glued together — pasul
Restrictivepasul.
A small missing piece filled in: a machlokes
A hole stopped up: if it changes the blast — pasul; if not — kasher
Restrictivepasul.
Permissivekasher — fit.
Or: it depends on the hole itself
Rosh Hashana 3:6
A Damaged Shofar
שׁוֹפָר שֶׁנִּסְדַּק
שׁוֹפָר שֶׁנִּסְדַּק וְדִבְּקוֹ,
פָּסוּל.
דִּבֵּק שִׁבְרֵי שׁוֹפָרוֹת,
פָּסוּל.
נִקַּב וּסְתָמוֹ,
אִם מְעַכֵּב אֶת הַתְּקִיעָה,
פָּסוּל.
וְאִם לָאו,
כָּשֵׁר: