Used 'Carbide Create' to make a simple 'schematic' for machining a PCB for a G3UUH style Crystal Oscillator/Crystal Checker.

The end result is quite pleasing (click the images to go supersized)

    

Seems to be working OK

Watch the machining process

Direct link to YouTube
https://youtu.be/Htc-WbQEaBo

CNC machining 'pads' on a CNC3018

I needed a circuit board for a TVI filter to stop 2 metre interference, like this (I'm going for the 144 and 432 MHz layout)
http://www.vk3nx.com/TVIfilters.html

I used 'Carbide Create' to 'draw' what I required
(Click the images to go supersized)

Then, added Toolpaths to machine outside of the darawing/pads

Set the cutter, depth, speeds/feedrate etc and save the GCode.

Load the gerber into 'Candle' and probe the PCB for a heightmap.

Set it off with a 1mm end mill and the board was done cutting in 45 seconds!

Quite please with the result - hope it works when finished assembling!

Fully assembled and tested, over 83db of attenuation at 145MHz and 45db at 433MHz

CNC Milling PCB Manhattan style solder pads on cheap CNC 3018 machine

I recently bought a cheap CNC milling/engraving/laser cutting machine - a CNC 3018 Pro as it was advertised locally for less than half the cost of new and hadn't been used for an hour as the owner just couldn't get on with it, hence the sale, much as this one...
https://www.amazon.co.uk/dp/B08P5WPDLP

I'd like to use it for milling PCB's and maybe for milling panel cutouts and possibly engraving them.
First test was to make some Manhattan Style solder pads and after some rapid learning of software, the first panel came out quite well.
Cutter is a 1mm end mill and 3 passes at 0.4mm cut depth to get to 1.2mm deep cut makes it easy to score through with a sharp craft kinfe/Stanley knife to get the bits required.

I stuck the board to the 'waste board' on the mill bed with 13mm wide double sided tape and used 'Candle GRBL controller' and it's height map facility to send the code to the machine.

It's quite easy to pry off by sliding an old putty knife under the board and then pick the tape off - didn't even need cleaning off with IPA or similar.

Short video of it in action (it's nowhere near as noisy as the camera makes it out to be).