1/16" shank diamond burs
These are FG dental burs, I bought a set a while back. They seem to be pretty decent, even have cut steel with them without stripping off the diamond plating.
These guys probably have exactly what you need, but it might take some deciphering to get there...
S7 is a shock resistant steel yes, but to do that, it won't get as hard as a proper cutting tool alloy and probably won't hold an edge very well.
I have a precision ground angle plate I made as an apprentice from S7. Someone "borrowed" it and used as an anvil.
Now it has dents on one corner...
What is going on with the buttcap?
It looks like the center of it is dented or had something polished out.
Did someone remove part of the design or is it just a lighting issue.
When doing copper my experience has been, that your first hit with copper, should be with a fairly aggressive texture on the punch. It seems to hold the copper from expanding as much. And it should be a firm hit.
I even have a small faced hammer that I used a fine checkering file to crosshatch...
I've used a rolling mill to make larger blanks out of coins. Silver coins work best, but copper/silver clad or old pennies works too. The clad coins are interest, if you cut all the way thru the cladding into the copper it will give a nice contrast and if you roll after engraving you can =almost...
I have similar problems, just click on the little CC button and get closed captions.
My tv is set up with closed captions as a default, if I turn the sound up enough to hear, it annoys the wife.
Reading is good for you right?
"Without effort!"
Without effort they will definitely be unique.
"No skill required!"
And it will show...
It does look like it might be good for light duty background removal.
If it's got enough power, it might be useful.
Give us a review.
I think even the "guilloche turning" might be wiggle cut, look closely at the image, there is some variation.
Look closely at around the 2 o'clock area.
Seems like it's all, well done hand engraving.
I could be wrong but...
One place I worked at had a blasting cabinet with glass beads, about 1/2 mm in diameter.
It left a beautiful satin finish on steel. Very similar finish to the one on Starrett micrometers.
Probably illegal today, but it sure made a nice finish, that was not rough or porous.
Sharpie makes an industrial version of their black markers, it will last, especially in a recessed area.
They have red lettering denoting the industrial version.
Google Sharpie, Industrial. You will find what you can use.