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[mlappin]

Stainless has several advantages, low corrosion, excellent heat transfer no matter the thickness. But also has several drawbacks, if you need field repairs can be very difficult to find a competent welder that is willing to on site welding of stainless. A good MIG machine can weld stainless but preferred method is TIG.

Going on fifteen years with my mild steel boiler, have some corrosion at the door flange and exhaust exit but those were design flaws on my part that will be addressed on my next build.

[Line hand]

Heatmaster. Heatmaster heatmaster is what keeps coming to mind