I have (had) some stuff called "Boeing Lube". I am pretty sure it is Boeing as in 737, 747, 777 etc.
It looks like soap and melts about like candle wax. I heat up the drill bit with a match - just enough to melt some onto the tip - works a treat with any metal, particularly good with stainless - even at faster speeds. I had a few guys get ready to heckle when I started drilling the holes in the s/steel exhaust for the EGT probes (6) on my IO 540 - each hole went through in seconds, but I melted on fresh lube each time. Wicked thing is that the Boeing Lube disappeared from the tool box shortly after that - so if anyone locates a source in the US, please let me know. The guy that gave it to me many years back said that it was also available as a liquid, but pretty expensive. The results with slow speed and GO-JO hand cleaner are impressive - worth remembering. Steve J
