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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Rust , oil , grease stains
Dawn dish soap has waxes to protect skin , and to chase spots on drying glassware . so it does not remove cooking oil/grease as fast as Laundry powder . Dawn will not clean clothes . Oils must be made slightly polar , Hot Lye and TSP will force oils to mix with water w/o harm to cloth . You simply blend the proper amt of water for max economy , and your clothes will last 20 years . Laundry powder will pH to 12 ! Thats skin softning range ! ----------------------------------- laundry powder is simply Tri-Sodium Phosphate way diluted . Liquid Laundry soaps lack the pH = 12 to cut the grease , so grease blocks the stain removers . so stain removers wont work . Use TSP , rinse , apply : 1) enzymes for protein, blood . (ZOUT) 2) Naval Jelly for Rust , Blood has Iron , but ZOUT desolves the Prt' which holds that microscopic Fe (rust) , so use Naval Jelly last . Now you can add softner ! ha ha lazy ppl want to use liquid , cause it needs no/less softner ! Clorine bleach is oxidizer ( Sodium HypoClorite 3-5% ) will interfere with the above ! Use it only if you are sure the tough stains are out . Bleach is oxidizer .. oxyalic acid is both (Naval JellY ) ------------------------- Bluing is a dye , DONT use on warm colors . Some dirt stains need simply direct application of powder or TSP and flexing the fibers . Many strong chems wont do anything til the temp is above 100 F , and concentration is hi and you flex it into the cloth . some U.V. coatings will wash away . Lets start a discussion on them .. |
#2
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Rust , oil , grease stains
werty wrote: laundry powder is simply Tri-Sodium Phosphate way diluted . That has not been true for at least 40 years - that's why they still say "no phosphate" on the box. Jon |
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