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mold extension

mold extension

See figs. 23, 41, 122, 123.

Bridge or spacer made of refractory material between the and the outer . It serves a double function as while also providing better air flow into the core to aid in its drying before the is poured.

Note: Such mold extensions may be created naturally when the core is not fully enclosed (as in the case of a bust with an open bottom) or by leaving openings in the wall of a lost-wax model. After casting, the hole in the bronze created by the mold extension will also facilitate removal of the core material and . The hole may later be sealed with a metal patch.

Figure 23
Figure 41
Figure 122
Figure 123

Source

Synonyms

  • core extension

  • core print

    Source: Copper Industry:

  • core seat

    Source: Copper Industry:

Translations

French: portée de noyau

Partie intégrante du ou partie rajoutée (), faite de la même matière que le noyau, reliant noyau et partie externe du moule réfractaire. Sert à maintenir le noyau en position lors de la .

Note: Aujourd’hui utilisée essentiellement dans la fonte au sable, on la rencontre également dans les anciens.

Sources

Copper Industry:

Art and Craft Textbook:

Alternate Translation

  • portée

    Sources: Copper Industry: ; Art and Craft Textbook: , 140, 164

German: morsa

Italian: morsa

Chinese: 自帶泥芯撐

Source

, 97

Alternate Translation

  • 芯撑

    Source: , 1572