One of the hardships of owning an old car is rebuilding rare parts when there are simply no replacements available. My 1907 White Steamer has a feedwater heater, a part that bolts onto the cylinders. It's made of aluminum, and over the 100-plus years it's been in use, the metal has become so porous you can see steam and oil seeping through. I thought we could just weld it up. But it's badly impregnated with oil and can't be repaired. If we tried, the metal would just come apart.
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