Post by firefighter on May 19, 2015 23:15:29 GMT 10
Having trouble with your NUTS or bolts
You’ve probably been there.
You are wrestling with a rusted-on nut or bolt, the wrench slips, you bash your hand, blood appears. “Oh, dear. I hurt my poor hand when my silly wrench slipped as I was trying to loosen this wretched rusted-on nut,” you say, or words to that general effect. So the info below might be useful:
In the April 2007 issue of “Machinist’s Workshop” magazine was published information on various penetrating oils. The magazine reports they tested these products for “break out torque” on rusted nuts and bolts. A subjective test was made of popular penetrating oils, with the unit of merit being the torque required to remove the nut from a “scientifically rusted” bolt. Average torque load to loosen nut:
• No oil used ………………… 516 foot pounds
• WD-40 ………………… ……..238 foot pounds
• PB Blaster …………………….214 foot pounds
• Liquid Wrench ……………… 127 foot pounds
• Kano Kroil ……………………. 106 foot pounds
• ATF/Acetone mix……………… 53 foot pounds
?The ATF/Acetone mix is a “home brew” mix of 50/50 automatic transmission fluid and acetone. Note this “home brew” released bolts better than any commercial product in this one particular test. “Our local machinist group mixed up a batch, and we all now use it with equally good results.” Note also that Liquid Wrench is almost as good as Kroil for 20% of the price. ATF/Acetone mix is best, but you can also use ATF and lacquer thinner in a 50/50 mix. (ATF = any type of Automatic Transmission Fluid).
The source is www.hotrodders.com/forum/what-best-penetratingoil-227739.html
