20120715
little chores around the house
My favorite camp axe, an Estwing with a hammerhead, is going on 30 years old, and was beginning to show its age. The chrome finish is worn away, showing pitted steel.
As I was browsing an oldtimer's page about restoring old Coleman camping equipment, there appeared a technique to remove rust and prep the metal surface for a newer finish.
The oldtimer described how to immerse the metal part in a weak solution of trisodium phosphate, with a separate electrode of the same metal as that to be cleaned (discarded steel banding in this case). Put positive voltage on that sacrificial elecrode, and negative on the part to be cleaned. Flow direct current through it for a loooonnnnng time, and the rust will be pulled off the part. It worked nicely enough that some steel wool got the whole axe looking uniformly black and rust-free. Then an old slow-cooker heated up some Brownell's zinc parkerizing solution. After that, Johnson paste car wax rubbed deep into the pores; she looks beautiful.
The camp stove that prompted me to look up the Coleman restoration page got less elaborate treatment. The drip pan was pretty rough with some rust and food drippings, but they came off easily. Garage floor cleaner (probably phophate in there too) got most of the crap off, and I tried Rust-oleum's galvanizing spary paint. Gorgeous.
But the burner will not shut off. New generator is on there, but I need to replace the packing in the fuel stem assembly. Replacement packing parts are on the way.
The oldtimer described how to immerse the metal part in a weak solution of trisodium phosphate, with a separate electrode of the same metal as that to be cleaned (discarded steel banding in this case). Put positive voltage on that sacrificial elecrode, and negative on the part to be cleaned. Flow direct current through it for a loooonnnnng time, and the rust will be pulled off the part. It worked nicely enough that some steel wool got the whole axe looking uniformly black and rust-free. Then an old slow-cooker heated up some Brownell's zinc parkerizing solution. After that, Johnson paste car wax rubbed deep into the pores; she looks beautiful.
The camp stove that prompted me to look up the Coleman restoration page got less elaborate treatment. The drip pan was pretty rough with some rust and food drippings, but they came off easily. Garage floor cleaner (probably phophate in there too) got most of the crap off, and I tried Rust-oleum's galvanizing spary paint. Gorgeous.
But the burner will not shut off. New generator is on there, but I need to replace the packing in the fuel stem assembly. Replacement packing parts are on the way.
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