Here is the pic.
Max.

 

I am considering moving to end mills. Supposedly, you can go to 10-mil trace-and-space clearance with end mills and they make for a neater job.

Better buy a bunch of them. And you'll probably need to take a couple of passes. That small of an end mill won't tolerate slow spindle speed or spindle run out. Don't understand whats so hard about making a couple of straight cuts in scrap at different depths to measure. Good luck with your project.

 

Better buy a bunch of them. And you'll probably need to take a couple of passes. That small of an end mill won't tolerate slow spindle speed or spindle run out. Don't understand whats so hard about making a couple of straight cuts in scrap at different depths to measure. Good luck with your project.

I don't understand what makes you think, that I think it is hard to make some tests I was just wondering if someone could take a good guess at angle and size of the bit.

 

Does this help???
If you need PCB accuracy down to 6 mil trace-and-space, we recommend the High Precision 30° bit. This bit has a 0.003 in tip diameter, compared to the standard bit which has a 0.005 in tip diameter.

Special 10-pack discount: Buy 9 end mills get 1 free, plus a free Bit Box ($19 value).


Features

• Type: half round
• Tip diameter: 0.005 in (standard) or 0.003 in (High Precision)
• Shank: 1/8 in
• Length of bit: 1.5 in
• Material: Micrograin Carbide

https://othermachine.co/store/cutting-tools/engraving-bit/
http://blog.othermachine.co/refinin...herplan?_ga=1.133240654.1953251138.1484448464