I really liked this YouTube video which has a field engineer explaining many electron microscope pictures of new and used grinding wheels. I was surprised at how stringy swarf is from the abrasion process. Narrator said the high speed steel was approximately 60 HRC.
He has another interesting video on the burr…
Thanks guys! This channel has a lot of interesting videos.
Hey guys, what is dressing?
Me. I was just dressing up. :dry: :lol:
Okay funny guy Haha! No in the video the gentleman refers as to how not get a burr? One of them he calls “dressing”? Come on Mark your the scientist, I bet you are the one to know. :whistle:
:sick: [quote quote=“EamonMcGowan” post=16372][quote quote=“mark76” post=16370]Me. I was just dressing up. :dry: :lol:[/quote]
Okay funny guy Haha! No in the video the gentleman refers as to how not get a burr? One of them he calls “dressing”? Come on Mark your the scientist, I bet you are the one to know. :whistle:[/quote]
Yeah, but unfortunately English is not my first language. Rumour has it there is a former English teacher (teacher of English?) in our midst…
“Dressing” a grinding wheel basically means two things:
(1) Shaping the grinding wheel (usually to restore flatness, etc.).
(2) Removing a thin layer from the surface of the grinding wheel to expose fresh abrasive.
You can read about it on Wikipedia:
https://en.wikipedia.org/wiki/Grinding_dresser
Thank you Anthony. Once I started to read “dressing a grinding wheel” it came to me. Lol Thanks again!
lol… Not to be confused with “dressage”! :silly:
https://en.wikipedia.org/wiki/Dressage
Hey! That’s enough horsing around! :lol: 
I check my edges with my microscope after stoning each grit. I’ve never seen a burr. Ever. Am I doing something wrong, or are they just too small for my 185X 'scope?
Not sure. I think they are just too small to see at around 200x magnification. Have a peek at these electron microscope pictures of knife edges. Many of them show various amounts of burr.
These are fantastic Anthony!
Absotootley fabulous images. I’m always amazed by the amount of trash that seems to collect along sharp edges. In the navy, we would call 'em “dingleberries.” Here, I call 'em “trash collected along sharp edges.”
I know very little about these electron microscope images; I simply came across them in another forum. I thought they were stunning!
I can’t confirm, but I heard they were a side project of some researcher, but unfortunately that researcher is currently too busy to continue the project. Hopefully, we see will see more.
These micrographs of lapping film with swarf are some of my favorite images:
Man, I wish I was not at work! This looks like some neat geeky stuff. Right up my alley!
Thanks!
I wonder if the film is diamond, or silicone carbide, or what. Really cool shots.
It’s 3 micron aluminum oxide film