These concoctions may be old news to many on this site, but I just recently discovered/tried them and thought newer members may find them handy.
Evapo-Rust Alternative also non-toxic, but not completely benign; wear hand & eye protection.
I've been buying and using Evapo-Rust from Harbor Freight for years to soak rusty parts/tools/etc - it converts rust to what looks like a black oxide coating. It's reusable even after the solution turns black, although it takes longer soaking after each subsequent use- until it eventually is non-effective. Watch the video- the dude explains his understanding of the process. If you just want the formula, he gives a time stamp to skip forward. He gives 3 formulas using easily obtained materials -locally &/or internet. The formula I used follows:
1 liter tap water/ 100 grams citric acid powder/ 40grams WASHING SODA / +/- tablespoon liq. dish soap There's another one using BAKING SODA.
Dissolve/stir the citric acid in a deep container about 3 times the volume of water; stir in washing soda in small increments- it foams up big time, but a little less each addition. When reaction is complete, stir in dish soap to help it somewhat cling on vertical surfaces if brushed or sprayed. See E-R application instructions or watch the video. Allegedly, it works faster and longer than E-R. I can't confirm speed or longevity, But it has worked great for me.
Ordered citric acid and washing soda from Amazon Prime. Ordering larger quantities reduces cost somewhat. Washing soda $5.38/55 oz (1560 gm) = $0.14/ea liter; citric acid $10.00/32 oz (907.2 gm) = $1.12/ liter; total = $1.26/liter .
E-R Amazon $ 28.91 / 1 Gal (3.78 liters) = $ 7.65 / liter. Harbor Freight $ 29.99 / 1 gal
Homemade Penetrating Oil
Viewed another web site that compared this HM formula to several commercial products - including my old stand-by Kano Kroil. Forgot to copy the URL. Beat all of them hands down - I've mixed and used it with satisfactory results - no comparative experience.
50/50 blend acetone / auto transmission fluid
Evapo-Rust Alternative also non-toxic, but not completely benign; wear hand & eye protection.
I've been buying and using Evapo-Rust from Harbor Freight for years to soak rusty parts/tools/etc - it converts rust to what looks like a black oxide coating. It's reusable even after the solution turns black, although it takes longer soaking after each subsequent use- until it eventually is non-effective. Watch the video- the dude explains his understanding of the process. If you just want the formula, he gives a time stamp to skip forward. He gives 3 formulas using easily obtained materials -locally &/or internet. The formula I used follows:
1 liter tap water/ 100 grams citric acid powder/ 40grams WASHING SODA / +/- tablespoon liq. dish soap There's another one using BAKING SODA.
Dissolve/stir the citric acid in a deep container about 3 times the volume of water; stir in washing soda in small increments- it foams up big time, but a little less each addition. When reaction is complete, stir in dish soap to help it somewhat cling on vertical surfaces if brushed or sprayed. See E-R application instructions or watch the video. Allegedly, it works faster and longer than E-R. I can't confirm speed or longevity, But it has worked great for me.
Ordered citric acid and washing soda from Amazon Prime. Ordering larger quantities reduces cost somewhat. Washing soda $5.38/55 oz (1560 gm) = $0.14/ea liter; citric acid $10.00/32 oz (907.2 gm) = $1.12/ liter; total = $1.26/liter .
E-R Amazon $ 28.91 / 1 Gal (3.78 liters) = $ 7.65 / liter. Harbor Freight $ 29.99 / 1 gal
Homemade Penetrating Oil
Viewed another web site that compared this HM formula to several commercial products - including my old stand-by Kano Kroil. Forgot to copy the URL. Beat all of them hands down - I've mixed and used it with satisfactory results - no comparative experience.
50/50 blend acetone / auto transmission fluid
