Subject: rust
Machinist's Workshop magazine recently published some information on
various penetrating oils that I found very interesting. Some of you
might appreciate this. The magazine reports they tested penetrates for
break out torque on rusted nuts. They are below, as forwarded by an
ex-student and professional machinist. They arranged a subjective test
of all the popular penetrates with the control being the torque required
to remove the nut from a "scientifically rusted" environment.
*Penetrating oils ........... Average torque load to loosen*
No Oil used ................... 516 pounds
WD-40 ..................... ... 238 pounds
PB Blaster .................... 214 pounds
Liquid Wrench ...............127 pounds
Kano Kroil .................... 106 pounds
ATF*-Acetone mix. ...........53 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 about 20% of the price. Steve from Godwin-Singer says
that ATF-Acetone mix is best, but you can also use ATF and lacquer
thinner in a 50-50 mix.
*ATF=Automatic Transmission Fluid
Machinist's Workshop magazine recently published some information on
various penetrating oils that I found very interesting. Some of you
might appreciate this. The magazine reports they tested penetrates for
break out torque on rusted nuts. They are below, as forwarded by an
ex-student and professional machinist. They arranged a subjective test
of all the popular penetrates with the control being the torque required
to remove the nut from a "scientifically rusted" environment.
*Penetrating oils ........... Average torque load to loosen*
No Oil used ................... 516 pounds
WD-40 ..................... ... 238 pounds
PB Blaster .................... 214 pounds
Liquid Wrench ...............127 pounds
Kano Kroil .................... 106 pounds
ATF*-Acetone mix. ...........53 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 about 20% of the price. Steve from Godwin-Singer says
that ATF-Acetone mix is best, but you can also use ATF and lacquer
thinner in a 50-50 mix.
*ATF=Automatic Transmission Fluid
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