Baseline Bolts uses National Upsetters to heat forge heads against bolts. During the process, the end of the round bar is heated via an induction process. Then, it is placed in the upsetter where a plunger compresses the heated steel to form the head of the bolt. Calculations are made to determine the precise amount of the round bar which has to be reshaped. We can forge the heads onto fasteners before or after the threading process. And, upsetters have a definite advantage over the presses mainly in the sense that length limitations aren’t an issue with bolts produced on upsetters.