Thread: Devil's Spit Theory

Agreed, the degreaser was a suggestion, but in our case, we just decided to go ahead and to grind the crap out of some 302 heads that had been sitting in a barn for who knows how long b/c the motor had a seal leak and seized. Luckily the heads were salvageable with some elbow, and aluminum oxide grease

Agreed, the degreaser was just a suggestion. We just went to grinding on the parts. It came out eventually, with a little elbow and aluminum oxide grease

Crap...my internet is gettin' screwy again, sorry for the DP guys

Fingerprints fall into a slightly different category, I would think. The sebaceous and sweat gland secretions that are the cause of a fingerprint being left behind produce a mix of both alkalis (sweat) and acid (sebaceous oil) that are probably kept apart by the oil barrier, so they do not neutralise each other. Handling is a recognised cause of corrosion of tool steel industry. Some individuals can cause tool steel to corrode in a day by touching it - they suffer from hyperhidrosis or sweaty hands. Sebum in normal individuals usually contains up to 16% free fatty acid.

Regards,
Neil

Hi my name is Josh, and I have a hyperhydrosis problem

Originally Posted by Neil Miller

Some individuals can cause tool steel to corrode in a day by touching it - they suffer from hyperhidrosis or sweaty hands. Sebum in normal individuals usually contains up to 16% free fatty acid.

Regards,
Neil

Nowadays, with the advent of cheap Chinese pre-made and pre-sterilized tattooing needles, most tattooers no longer make their own needles but for years we bought packs of 1,000 and made our liners and shaders one at a time.

I always preferred high carbon steel tattooing needles and in handling them I never had a problem with those left in the wrapper rusting. I knew other guys who would touch the needles and they always would be rusty and ruined the next time they opened the wrapper. Some people do have a PH that is conducive to corrosion.

Originally Posted by tiddle

Hi my name is Josh, and I have a hyperhydrosis problem

Hi - my name is Neil and I have an alcoh... - er, sorry, wrong room!

AA is for quitters, don't be a quitter Neil...don't be a quitter!

Hyperhydrosis is a PITA, I had to switch from nickel strings to SS on my bass b/c within a week they would begin turning black, and dull the tone, and I was too lazy to just clean them

Great info guys. On a side note I actually have a razor that has a some fingerprints etched on it. Started off as a rusty fingerprint that left an etching after polishing the rust off. It doesn't look bad though. I've been wanting to mess around with my own fingerprints and forcing patina and see if it would create a design.