Some new (to me) technical information on freeing up those rusted fastners. I wish I knew about this 10 years ago.
I hope this helps anyone trying to dislodge these rusted bolts.
Tony
Machinist's Workshop magazine actually tested penetrating
oils for break out torque on rusted nuts. Significant results!
They are below, as forwarded by an ex-student and
professional machinist
*Don't forget the April 2007 "Machinist's Workshop"
magazine comparison test.*
They arranged a subjective test of all the popular
penetrants with the control being the torque required to remove the nut from a "scientifically rusted" environment.*
*Penetrating oil ..... Average load*
None ...................... 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 was a "home brew" mix of 50 - 50
automatic transmission fluid and acetone.
*Note the "home brew" was 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 about as good as "Kroil"
for about 20% of the price.
Your experience may vary, etc., etc.
I will definitly try the atf acetone mix. I always had good luck with PB blaster, but i will try this new mix
Thanks G
72 six-day