Oxy accetalene

[Ley253]

Thing to remember is that Oxygen does the cutting, propane/ acetylene only provides the heat. If your good, its poss to turn off the fuel gas once the cut has started.Our plasma cutter is the "Bees Knees" though. Purchased from a bankrupt sale, thickest material cut so far was steel 30 mm thick!

 

[davidroberts30]

yeah,but i just cant get on with it- and used up way too much oxygen-

What sized nozzle?sounds way to big

 

[Bury the Trash]

1/32 - 3to 4mm steel heated it for awhile got hot to start but just dint seem to have a decent cutting action

 

[davidroberts30]

1/32 - 3to 4mm steel heated it for awhile got hot to start but just dint seem to have a decent cutting action View attachment 194988

the rust is screwing up the flame

 

[ACEngineering]

1/32 - 3to 4mm steel heated it for awhile got hot to start but just dint seem to have a decent cutting action View attachment 194988

Try a smaller nozzle for thin steel. Nozzles come in lots of sizes and I would say yours was way to big for that box section?

Saying that I have no idea were a 1/32 nozzle is on the scale of little to big!

 

[davidroberts30]

i sometimes just run a line with a grinder,easier to see and cleaner cut
with propane i can cut about 400mm a minute,in 12mm steel
i find it more than adequate and quite fast

 

[Bury the Trash]

they rusted - its been a month or so.after paint burnt off . im thinkin you are right, nozzle what size for say 4mm steel ? funny thing is lot of oxygen went but propane seems to last for ages.or i will just try a smaller one trial and error best way probly

 

[davidroberts30]

they rusted - its been a month or so.after paint burnt off . im thinkin you are right, nozzle what size for say 4mm steel ? funny thing is lot of oxygen went but propane seems to last for ages.

i think im on a 1/32 nozzle too

 

[Bury the Trash]

im gonna go smaller and practice on flat instead of box i think.gotta order more oxygen first though

 

[sawdust]

This might help you

 

[Blue.]

This is some 20mm plate cut with propane,every bit as good as laser cutting,he is bloody good at it.

 

[Blue.]

I have one of these,great piece of kit.

 

[Bury the Trash]

looks like 1/32 smallest PNM nozzle, they list a VVC nozle whatever that is -but they claim to cut quicker. Trouble is when i go cutting its usually scrap or some awkward to get at piece - plasma on single phase is alright in workshop and clean steel . other than that its the lethal weapon -9 inch angle grinder

 

[Dod_1985]

All you need is propane nozzles. Don't waste money buying separate new kit never had any problems swapping between acytelene and propane used to do it regularly depending what was available at the time.

 

[DrDunc]

All you need is propane nozzles. Don't waste money buying separate new kit never had any problems swapping between acytelene and propane used to do it regularly depending what was available at the time.

Do you run the pressures the same, or does propane need more oxygen?

 

[Dod_1985]

Do you run the pressures the same, or does propane need more oxygen?

To be honest way you in all me time burning I have never actually looked at what the pressure gauge says just adjust to suit the job I'm doing at the time. Don't usually have to change pressures much though when changing. You just have to be a bit more patient for the steel too heat up way proppane

 

[Dod_1985]

1/32 - 3to 4mm steel heated it for awhile got hot to start but just dint seem to have a decent cutting action View attachment 194988

You get a sheet cutting nozzle for acetylene for cutting under 4mm.
They have a narrow rectangular end way a step so you can cut with the nozzle tight on the steel does a real nice job if you can't justify a plasma cutter

 

[Dod_1985]

1/32 - 3to 4mm steel heated it for awhile got hot to start but just dint seem to have a decent cutting action View attachment 194988

https://www.google.co.uk/search?q=s...sjH8geXuYjYBw#gfe_rd=cr&imgrc=mC2ODthbpcxqtM:
Not sure if you can get these for propane but def worthwhile having one in the tool box