I'm really not sure what went wrong but my ht was successful and my first temper at 400 produced an even straw color. The blanks were sanded and washed after ht. Second temper at 400 was a mix of bronze and blue with blue on most edges. I added a large chunk of metal to curb the temperature swings. This was a toaster oven but a high end one. Should have used my Evenheat but it takes so long to cool down. Question is should I ht and temper again or is this just an optical illusion? Temperings were identical! Any advice would be greatly appreciated.