Jewelry Midterm

rolling mill

used to change thickness of metal sheet

pickle

with acid diluted with water, used to eliminate oxide and borax on metal

drawing mill

used to change thickness or shape of wire

tumbler

used to clean and give a shiny finishing to all the little pieces, good for wires

ultrasonic machine

used to clean off the pastes from the piece that was polished or buffed

sawing

one of the most basic jewelry technique, the wood palette is slanted

blade

you must insert with the teeth pointing out

annealing

metal is heated to make it softer and easier to work with. heat the metal until it’s generally glowing

quenching

putting the metal in water to let it cool down

annealing temp for copper and brass

600-700 C

annealing temp for sterling silver

593-649 C

melting point of sterling silver

890 C

melting point of fine silver

960 C

soldering

process in which two or more items are joined together by melting and putting filler metal into the joint

steps for soldering

prepare the metal, apply borax, place solder, torch it, quench the metal, pickle, wash it with water and dry well

what does pickle do

weak acid solution used to remove oxidation and solidified flux from the metal piece

polishing wax

red

what does ultrasonic do

eliminate wax from the piece

buffing wax

yellow