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SAFETY AND SUPPLIES

SAFETY

•

Read and understand the

•

Wear protective clothing, gloves, and eye protection during procedures . Nitrile Gloves should be worn to prevent contact with

Alcohol and waxes or other chemicals . This is not required, but is a recommended safety measure .

•

Always work in an open, well ventilated space .

•

Use containers recommended for dispensing and application .

•

Have a spill system in place: catch pan, wax paper, or a drop cloth .

SUPPLIES

Cleaning

•

Nylon Brush

is used to remove excess core powder from the part . These brushes can be found individually or as a set at

many hardware stores .

•

External compressed air

lines that can be used . If there are none available, a can of compressed air may be used (found at hardware stores) .

Solvent Wash

•

Plastic Bin

is necessary to contain the solvent . We used a 6qt . Sterilite® bin . The bin is made of Polypropylene &

Polyethylene . Bins like this can be found at a container store or a super-center such as Walmart or Target .

•

Isopropyl Alcohol 99%

91% can be found at many local drug stores . IPA 99% must be purchased from a chemical supplier such as Sigma-Aldrich .

• MSDS for IPA can be found at http://www .airgas .com/msds/001105 .pdf

• IPA has a Health rating of 2, Flammability rating of 3, and Physical Hazards rating of 0

•

Wax Paper

should be used as a drying surface . Wax paper can be found at grocery stores .

Wax Dip

•

Plastic Bin

is necessary to contain the wax . We used a 6qt . Sterilite® bin . The bin is made of Polypropylene & Polyethylene . Bins

like this can be found at a container store or a super-center such as Walmart or Target .

•

Soy Wax

is used to enhance color in this process . We ued Ecosoya Container Blend Advanced Soy Wax (sometimes referred to

as Ecosoya CB-Advanced soy wax) . This wax is used due to its relatively low melting temperature . It can maintain its liquid state

at 50°C, below the distortion temperature of the part . This wax can be obtained from candle wax suppliers; ours came from an

online supplier called Candle Science. Peak Candle is another great website to find this wax. The wax can be purchased in 2, 10,

and 50 pound bags. The wax comes in flake form. When filling the container to hold the wax keep in mind that when the flakes

melt, the liquid will be approximately half of the depth of the flakes.

•

Peak Candle website: http://www .peakcandle .com/category/Waxes/Soy-Wax .aspx

•

Candle Science: http://www .candlescience .com/wax/ecosoya-advanced-soy-wax/

•

Finishing Oven

is used to heat/melt the wax . We used a ProJet Finisher, which can be purchased through 3D Systems .

•

If you do not have a finishing oven, use a Paraffin Wax Heater; this can be found at beauty salons, spas, and spa supply

stores . A Crock Pot, Double Boiler, Hot Plate or other heating device will work to melt wax .

•

Cooking Thermometer

grocery .

•

Tongs or gloves

will be used to dip the part in wax . Tongs can be found at a grocery store . Gloves can be found in hardware

stores and many other locations .

3D Systems, Inc.

MSDS

(Materials Safety Data Sheet) prior to using

will be used to blow away any core powder or dust on the part . Many facilities have compressed air

(referred to as IPA) . IPA 70% can be used instead, but will not produce as vibrant colors . IPA 70% and

will be used to monitor the temperature of the wax . This can be found at a kitchen supply stores or a local