Authentic Pressing Guide
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| * All press programs are only recommendations of the ceramic producer and can be modified individually |
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| * These pressing times are only a recommended startingpoint. Each ring may require more or less pressing time depending upon the size and number of patterns. |
| Authentic Porcelain: |
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| Ring Size | Entry
Temp (B) |
Start Vacuum (V1) |
Rate
of Climb (T_) |
High Temp (T2) |
Hold Time (H) |
Repress
Time (N) |
Release Vacuum (V2) |
Pressure |
| 100 gm |
700 C
1292 F |
700 C
1292 F |
60 C
108 F |
940 C
1724 F |
20 min |
1-2 min* |
940 C
1724 F |
4.5 bar 68 psi |
| 300 gm |
700 C
1292 F |
700 C
1292 F |
50 C
90 F |
960 C
1760 F |
30 min |
1-4min* |
960 C
1760 F |
4.5 bar 68 psi |
| * Repress time is additional to the internal 4 min press time |
IntraTec Tip
The IntraTech ProPress 100 has the capability to
perform an automatic pressing cycle, which is ideal. To enable this
valuable function, follow these 3 easy steps:
•Press the Special Function button and turn the selector knob counter-clockwise to Calibrate Oven, then press next.
•The furnace now asks for a password: turn the selector knob to 310 and press next.
•Now it asks, "Use timed press?" Turn selector knob to No, then press next. After enabling this feature, go to each pressing program and change the Re-press time to match the recommendation above.
Note: Finding the optimal pressing temperature for each furnace is crucial. To determine the optimum pressing temperature, perform the following "press-to- failure" test. Lower the pressing temperature (step-by-step, usually 5 to 15 C) over two to three pressings until a mispress (failure) is attained. At this point, the last (previous) temperature at which everything pressed completely is considered the optimal pressing temperature. To make this experiment scientific and valid, work with only one variable at a time; in this case, pressing temperature. Also, observe several constants, including: entry temperature, rate of climb, hold time and re-press time.