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Passo 2
A correctly sized driver should “fill up” the screw head, utilizing both the full depth and width of the socket. Beginners commonly make the mistake of using a driver that’s too small. An undersized driver slips easily, damaging the screw head and making it difficult to turn afterward—even with a correctly-sized driver. This is known as a stripped screw. An oversized driver fits into the screw only shallowly, if at all.
Size Selection
  • A correctly sized driver should “fill up” the screw head, utilizing both the full depth and width of the socket.

  • Beginners commonly make the mistake of using a driver that’s too small. An undersized driver slips easily, damaging the screw head and making it difficult to turn afterward—even with a correctly-sized driver. This is known as a stripped screw.

  • An oversized driver fits into the screw only shallowly, if at all.

  • When you find a driver that fits about right, compare the next size up as well as the next size down before you proceed.

  • In general, use the largest driver size that fits snugly into the screw.

Un tournevis à la bonne taille devrait "remplir" la tête de vis, utilisant les pleines profondeur et largeur de la cavité.

Les débutants font souvent l'erreur d'utiliser un tournevis trop petit. Un tournevis sous-dimensionné ripe facilement, endommageant la tête de vis et la rendant difficile à agripper par la suite, même avec un tournevis à la bonne taille. On a alors abîmé (ou cassé) la vis.

Un tournevis surdimensionné ne pénètre pas entièrement dans la tête de vis, voire pas du tout.

Quand vous pensez avoir trouvé la bonne taille, comparez la taille au-dessus et la taille en dessous avant de continuer.

En général, utilisez la plus grande taille qui rentre confortablement dans la vis.

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