I just ordered my first forge. I've been making knives by stock removal for about 8 years. The main thing I want to do now is heat treat. My budget is very limited, and I know I need tongs but the variety is overwhelming. Which type should I start with, something with flat jaws or with the groove in both so the knife can be held by the end. I've been sending knives off and I've no complaint about the work but the cost with shipping is limiting my output.