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Burnout Cycles

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.