"Brass" plaques

[Britannicus1]

Inspiring work there Timtoo. One of my aspirations is to make a really satisfactory astrolabe. I have SVC files for the engraving, though somehow fusion 360 scrambles them up a bit . I also fix clocks from time to time, I hadn't thought my cheapo Chinese cnc would e up for the job - just playing with the technology at the moment. I got the point about brass, and the speeds and feeds - what would be a good set to start with to experiment ? I'd figured a slow feed rate and my fastest (8000 rpm) rotation would be a start

[timtoo]

I got the point about brass, and the speeds and feeds - what would be a good set to start with to experiment ? I'd figured a slow feed rate and my fastest (8000 rpm) rotation would be a start

Hi Britannicus
I started with the feeds and speeds from Winston Moy in the Carbide 3D video from the link in my previous post
Run a couple of tests and see how they go for you.
I found I could use between 7,000 and 10,000 RPM and get good results, with the spindle on manual control I just turned up / down the spindle speed until the cut looked / sounded better.

Tim