We have no meanings for "heat to redness" in our records yet.
1 Raise the heat to redness , and continue at this temperature for about three quarters of an hour.
2 Keep the fire burning, and an iron plate heated to redness over it.
3 This likewise takes place with great rapidity when the metal is heated to redness .
4 Dr. Hooke, 1684, remarked that steel or iron was magnetized when heated to redness and placed in the magnetic meridian.
5 These are heated to redness and shaped by a series of punches which force the heated metal through steel dies by hydraulic pressure.
6 Steam still rose, hissing softly, from the bent and twisted guns which had burst when they were heated to redness by the power-beam.
7 In the same way, if the burner from which the gas is issuing be heated to redness , the space between burner and flame disappears.
Grammar, pronunciation and more