Originally Posted By: Merkava_4
Originally Posted By: Ducman
Copper.
That's a new one on me.
They never taught us that in college.
Three things come to my mind that we were taught.
1, Don't lay the cylinder down as it will draw off the Acetone.
2, Don't draw it off at too high a volume as it will also draw off Acetone.
3, Don't use it at a greater depth than 1 metre when submerged under water.
Nothing about freezing or Copper.
They didn't mention anything about setting the pressure regulator to 5 psi did they ?
It doesn't ring a bell.
We don't work in PSI here anyway, that is unless one is inflating tyres or working with compressed air in general.
Besides where I did my time we never used Acetylene as it's best suited for welding due to the higher temperature it burns at so we only used it at college for Oxy Welding and a very little bit of cutting. Come to think of it the only time one would be drawing Acetylene off at or near maximum would be pre heating and or Oxy welding Cast iron by Brazing or Fusion welding
In our workplace all our work was exclusively cutting with Propane which was more economical for high speed(at the time). No Oxy welding of any description.
We often found that welding Cast iron was best done with Cast craft electrodes or Stainless steel electrodes.
The dedicated Acetylene gas regulators have a red zone to indicate the maximum limit one could draw it off at so it was safe. In that case there was no need to be concerned about specific values.
The equation changed drastically when Propane became more expensive.
Then a little later on everybody was changing over to Plasma cutting anyway which had a different set of issues.
Later it changed to HD Plasma cutting for some applications where one required a better finished cut edge.
Now days it's Laser cutting for the thinner stuff, or abrasive water cutting for the really thin stuff where no distortion is required and clients have very deep pockets.
At the end of the day, I'm well and truly out of date.