Keep the Inner Cones of the Flame Approximately 1/8 In to 1/4

Q11: An injector-type torch must be used if

Q12: _ is used in tips having eight

Q13: When removing a cutting tip, if the

Q14: An excessive amount of preheat flame results

Q15: Most nonferrous metals-such as brass, copper, and

Q17: Sunglasses or other dark shaded glasses are

Q18: Most cutting tips are made of _

Q19: If _ is used in a deeply

Q20: The kindling temperature of iron results in

Q21: _ slag is very porous, brittle, and