(03-30-2018, 03:34 PM)randyc Wrote: Ken, first of all NICE score on the Starretts ! Also thanks for the detailed description for cleaning up gauge blocks.
Ken or any other knowledgeable person, I have a question:
Suppose one cleaned the surface where rust is starting to form just enough to make the face smooth again but not completely removing signs of corrosion. If the block is kept well protected with vaseline or other protective film, would that prevent any further rust or not ?
This isn't a rhetorical question, by the way, it is what I did with the gauge block in my set that showed beginnings of rust. Thanks for any advice.
Randy,
Can't guarantee it won't come back. It'll always be stained where the rust was located. Keeping the block coated with vaseline or oil or other protective film should keep rust from coming back. Have to remember, rust does remove a layer of atoms or so off the surface. Nothing you can do about replacing it. To remove the stain from rust, it has to be sent to a lab and the surface re-lapped, which will change the size considerably. Maybe by couple thousandths or so. By the time you do all of that, your better off buying a new gage block.
Please don't use Evapo Rust or any other home brew solution to remove rust on gage blocks.
Ken