Acetylene 

Oxygen 

Air 

gas 

oxygen 

fuel 

acetylene 

air 

can self combust

burns well underwater 

don't ever move the gas cylinder 

don't light fuel off acetylene ever

5 psi 

10 psi 

15 psi 

15 cfh 

make it hotter 

make the flame cleaner

reduce the amount of carbon deposit 

to puddle metal with other metals 

a burn on your eyes from UV light 

when fire goes back inside the the torch or line 

a loud popping noise when welding 

when molten metal sparks up towards the operator

adjust the neutral flame 

increase the acetylene flow rate so the flame feathers out 

check torch tip number for correct size and set angle 

drain gas lines 

the temperature is not very hot 

because its not synthetic  

in case of fire prevention 

finger and manual dexterity 

a lighter without a fuel source attached 

any lighter that used a flint and steel to make a spark

a long lighter typically used for a welding or a bbq 

an open flame source to light a flame 

a flame containing excess amount of fuel gas 

a flame containing excess amount of oxygen 

a flame that pushed away all oxygen 

a flame that use oxygen to get hotter 

for different thickness of metal 

for different types of metal 

to switch from cutting to welding 

to control the flame so it is safe 

prevent oxygen from entering the weld 

to prevent fire from going back into the lines or tank 

to prevent operator eye injuries 

to block UV light from the operator 

the fuel lets out a lot less carbon (black particles)

the welding torch flame is quite and round 

when the torch is hovering the correct distance from the plate 

the second flame merges with the 3rd one to become one

1 inch 

1/2 inch 

1/8 inch 

1/4 inch 

in one hand like a pencil 

with both hands like a pencil 

using a fist to support the torch handle 

a light grip with fuel adjustment knob in one hand 

a flame that is used to weld carbon steel 

a flame containing excess oxygen 

a flame containing no carbon 

a flame containing excess amounts of fuel 

5 psi 

5 cfh

5 kg

5 abs

two hands are used to control the large fire existing the torch 

grab the torch with two hands, both like a pencil 

one hand operates the torch while the other hand adds filler material 

one hand operates the torch while the other hand controls gas pressure 

correct pressure setting including the amount of pressure needed to push the gas through the line 

the setting of the pressure needed to weld 

the pressure setting used for welding that creates a neutral flame 

the time of the weld takes times the size of the bead equals the strength of the weld from gas pressure 

thinner the metal it can weld 

thicker the metal it can weld 

the more gas pressure is required to operate the torch tip

the more oxygen gas flow rate required to complete fusion 

45 degrees in direction of travel 

45 degrees pointing back towards the operator 

15 degrees in direction of travel 

15 degrees pointing back towards the operator 

mark it with soap stone to denote usage hours 

remove torch parts and leak check the system 

bleed the lines and zero the regulators 

check for adequate fuel supply remaining due to acetylene 7 hour fill rule 

adjustment valve 

set screw 

pressure indicator 

flashback arrestor

reversed threaded 

right hand threaded 

hand tightened only 

fine coarse threaded