pewter casting
TRANSCRIPT
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Pewter Casting
• Medieval art form• Interlace patterns
(animals and linear designs)
• Emphasis on openwork
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• Pewter is an alloy of tin and a little copper
• Pewter has a low melting temperature of 500 – 750 degrees
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Pewter does not have a high, glossy finish, but rather, it has a satin finish
Pewter Silver
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More Examples
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More Examples
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More Examples
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More Examples
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Search Topics
•Celtic Knots
•Filigree
•Lacework
•Openwork
•Pewter pendants/broaches
•Calligraphy
•Chinese & Japanese characters
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Designs:
Geometric formsNature-based formsAlpha-numeric forms
Metal must flow into all parts!• Pouring spout – sprue
• Air vents – gating
Designs must fit within the circle!
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Pouring area (sprue)
Air vents(must go upwards)
Metal will not flow uphill!
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Melting and pouring• Molds must be COMPLETELY dry!• Clamp a flat cookie to the carved cookie, settle in the
sand at a good angle.• Heat the ladle, don’t allow it to rest on the sand (the sand
will absorb heat and take longer)• When metal rolls easily, pour while keeping the flame on
the metal• Unclamp the two plaster cookies, remove the metal and
dunk in cold water. Remember, it’s HOT! Use tools, not fingers!
• If the casting is incomplete, remelt the metal and try again.
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Hints for better casting
• Divide the jobs, one student to hold ladle, one to hold the torch
• Don’t ‘toss’ metal into the ladle – it can splash out• Be sure all papers are clear of the casting area• Use a piece of plywood to protect the table• Have water ready to dunk hot metal (or to soothe burnt
fingertips!)• The molds cast better when they’re warm, if you’ve got a
toaster oven, pre-warm the molds for faster results• If the first cast isn’t complete, inspect for inferior carving,
add pathways, or cast again while the mold is warm
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Supplies• Propane tank• Electronic igniter• Oil pan (feed pan)• Plaster of Paris• Bag of play sand• Casting pewter• Clamps• Tweezers• Ingot molds
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Grading Criteria
• Linear quality of design, must be very open and fluid, consider movement,
NO paperweights
• Creativity of design
• Craftsmanship of final product
• Participation, Effort, & SAFETY