Help for Bluecast

hello, i am using resin bluecast for preform machine during casting encountering some malfunction.
After cleaning with alcohol the product is deformed in the direction of contraction and after mixing the gypsum 4-5h I start the burning process.
My burning process is as follows
open the furnace 150 degrees C insert flask within 1h
Then I increased to 800 degrees Celsius within 4 hours and cooled down to 650 degrees Celsius for 1h.
After the product found too many errors for help
Sorry i use google translate


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