Powder & Water Requirements for Flask Sizes- 1st
figure (oz) represents investment powder. 2nd figure (ml) represents water
Water / Powder Ratio: 40/100
Water / Powder Ratio: 38/100
diameter
2" tall
2½" tall
3" tall
3½" tall
4" tall
5" tall
6" tall
2" tall
2½" tall
3" tall
3½" tall
4" tall
5" tall
6" tall
2"
5 oz. / 57 ml.
6 oz. / 68 ml.
7.5 oz. / 85 ml.
9 oz. / 102 ml.
10 oz. / 114 ml.
5 oz. / 53.9 ml.
6 oz. / 64.6 ml.
7.5 oz. / 80.8 ml.
9 oz. / 97 ml.
10 oz. / 107.8 ml.
2½"
8 oz. / 91 ml.
10 oz. / 114 ml.
12 oz. / 136 ml.
14 oz. / 160 ml.
16 oz. / 182 ml.
20 oz. / 228 ml.
8 oz. / 86.2 ml.
10 oz. / 107.8 ml.
12 oz. / 129 ml.
14 oz. / 150.9 ml.
16 oz. / 172.5 ml.
20 oz. / 215.6 ml.
3"
12 oz. / 136 ml.
15 oz. / 170 ml.
18 oz. / 205 ml.
21 oz. / 240 ml.
24 oz. / 274 ml.
30 oz. / 340 ml.
32 oz. / 410 ml.
12 oz. / 129.3 ml.
15 oz. / 161.7 ml.
18 oz. / 194 ml.
21 oz. / 226.4 ml.
24 oz. / 258 ml.
30 oz. / 323 ml.
32 oz. / 345 ml.
3½"
16 oz. / 182 ml.
20 oz. / 228 ml.
24 oz. / 274 ml.
28 oz. / 320 ml.
32 oz. / 364 ml.
40 oz. / 456 ml.
48 oz. / 548 ml.
16 oz. / 172 ml.
20 oz. / 215 ml.
24 oz. / 258 ml.
28 oz. / 301 ml.
32 oz. / 344 ml.
40 oz. / 430 ml.
48 oz. / 5168 ml.
4"
18 oz. / 205 ml.
23 oz. / 262 ml.
27 oz. / 308 ml.
32 oz. / 364 ml.
36 oz. / 410 ml.
48 oz. / 546 ml.
56 oz. / 637 ml.
18 oz. / 194 ml.
23 oz. / 247.9 ml.
27 oz. / 291 ml.
32 oz. / 344 ml.
36 oz. / 387 ml.
48 oz. / 516 ml.
56 oz. / 602 ml.
5"
3½ lb. / 682 ml.
4½ lb. / 864 ml.
5½ lb. / 1000 ml.
3½ lb. / 645 ml.
4½ lb. / 817 ml.
5½ lb. / 946 ml.
Conventional
Mixing/Working Time (in minutes)
1
2
3
4
5
6
7
8
9
10
11
12
Add powder to water & mix
Vacuum the mixing bowl
Pour into flask
Vacuum flask
Top off flask
Setting time
Gloss off.
Vacuum Mixing/Working
Time (in minutes)
1
2
3
4
5
6
7
8
9
10
Add powder to water & mix
Fill the flasks
Setting time.
Gloss off.
Suggested Burnout Cycles
5 hour cycle
2�" x 2�"
8 hour cycle
3�" x 4"
12 hour cycle
4" x 8"
Casting Temperatures
Ladies rings- Filigree or intricate designs.
900° F-1000° F
Gents rings- Heavier designs.
700° F-900° F
During the last 1-2 hours of burnout, the temperature must
be adjusted so that the flasks are at a correct temperature for casting.
1 hour 300° F
2 hour 300° F
2 hour 300° F
1 hour 700° F
2 hour 700° F
2 hour 700° F
2 hour 1350° F
3 hour 1350° F
2 hour 900° F
1 hour Casting Temperature
1 hour Casting Temperature
4 hour 1350° F
2 hour Casting Temp.
Storage: Always store investment in a dry environment.
After use, expel excess air from plastic bag and close lid tightly.
Mixing: The investment should always be added to the water in
the recommended water/powder ratios.
Working Time: The work time is the time that has elapsed between
adding the powder to the water, and when the investment thickens.
Water Temperature: Water should be 70° F- 75°
F and should be
measured with a thermometer to insure consistency. Colder water extends
the work time, warmer water shortens the work time.
Investment Temperature: Investment should always be stored at
the same temperature. If the temperature of the investment is warmer in
the summer and cooler in the winter, the water temperature must be raised or
lowered to compensate. Temperature of the investment should be
periodically measured with a thermometer. Colder investment extends the
work time, warmer investment shortens the work time.
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