Arukh HaShulchan, Orach Chaim 317:28-318:6

Sugya Map

• Issue: The scope of Melakhet Tofair (Sewing) regarding temporary attachment of non-porous materials.
• Nafka Mina: Whether magnets, Velcro, or snap-buttons constitute Tofair if intended for temporary use.
• Primary Sources: Shabbat 74b, Shulchan Aruch, Orach Chaim 317:1, Arukh HaShulchan, Orach Chaim 317:28-30.

Text Snapshot

• Arukh HaShulchan 317:29: "וכל דבר שאינו עשוי לקיימא... אין בו משום תופר."
• Leshon Nuance: The Arukh HaShulchan pivots from the Bavli’s focus on k’yuma (permanence) to an emphasis on the nature of the connection. Note the shift from Tofair (sewing) to the broader Dveikah (adhesion) category.

Readings

• Rambam (Hilchot Shabbat 10:11): Defines Tofair as joining two pieces of fabric. The chiddush is the necessity of a "permanent" stitch.
• Arukh HaShulchan (loc. cit.): Argues that modern fasteners (buttons/hooks) are not Tofair because they are inherently zmanit (temporary). He pushes the shita that Tofair requires an act that "unifies" the object’s structure, not merely its utility.

Friction

• Kushya: If Tofair is about the "unification of parts," why is a button—which clearly holds two sides together—not Tofair?
• Terutz: The Mishnah Berurah (340:17) suggests that since the button is designed to be opened and closed, it lacks the gemirut (finality) required for a melacha. It is not a tikkun (fix) of the garment, but its derech tashmish (standard usage).

Intertext

• Shulchan Aruch, Orach Chaim 340:12: Addresses removable attachments.
• Responsa Igrot Moshe, Orach Chaim 4:73: Discusses modern adhesives, distinguishing between Tofair and M'mareiach (smearing).

Psak/Practice

The Arukh HaShulchan provides the leniency for standard modern fasteners. If the object is designed to be undone frequently, it escapes the issur of Tofair. However, one must be wary of Koshair (tying) if the mechanism involves knots.

Takeaway

If it is built to be broken, it is not Tofair. The melacha requires a commitment to permanence; temporary functional attachment is the derech tashmish, not the tikkun.