I’m UK based, I use a Klein-weld which looks just like a 2 operator
Microweld, I got it off Ebay and it works well, All I did was change
the fluid inside. It should run all day without a problem as it’s fan
But as it gets up to pressure very quickly I don’t always leave it
running, just turn it on when needed.
Biggest problem is getting the MEK as only one supplier will supply
it in 5lt tins.(Cousins)
Water in the bubbler tank will give the hottest temp, the more
volatile the fluid in the tank the cooler the flame. The Hydrogen and
oxygen are produced in the perfect combination for burning. To cool
the flame you need to remove the amount of oxygen in the gas mix. So
MEK etc is picked up in the gas flowing through the bubbler so you
get H20 +MEK. So now you have less oxygen and more fuel in the mix,
so it burns cooler.
Main down side is that you can only change the flame size by
changing tips. You can’t change the pressure and it will blow solder
Fun thing is to aim the flame on a cold steel block and water will
flow away from where the flame hits.
I use it most for doing chainmail or whatever you want to call it,
as it gives great heat in a small place.