The following are suggested burnout cycles for wax elimination when using either manual or electronically controlled furnaces:
Select the proper cycle according to the size of the flask.
| 5 Hour Cycle |
8 Hour Cycle |
12 Hour Cycle |
| For flasks measuring up to 2-1/2" x 2-1/2" with the oven preheated to 300ºF |
For flasks measuring up to 3-1/2" x 4" with the oven preheated to 300ºF |
For flasks measuring up to 4" x 8" with the oven preheated to 300ºF |
1 hour @ 300º F
1 hour @ 700º F
2 hours @ 1350º F
1 hour @ * - See note below |
2 hours @ 300º F
2 hours @ 700º F
3 hours @ 1350º F
1 hour @ * - See note below |
2 hours @ 300º F
2 hours @ 600º F
2 hours @ 900º F
4 hours @ 1350º F
2 hour @ * - See note below |
* - During the last adjustment, the temperature should be set so that the flasks are at the correct temperature for casting. For example: flask temperature for ladies' or filigree rings should be 900 to 1000ºF. Flask temperature for mens rings should be 700 to 900ºF.