A New Helicopter Landing Pad

I just finished milling a new spoilboard for my CNC mill. This one has some extra features:

The central cutouts allow me to easily attach my 4th axis in proper alignment.

The slots allow me to clamp down smaller pieces of material without removing the board.

It's just simple piece of wood, but it still took a bit of effort measuring, planning, and scripting, since it needed to be very precise.

The next thing I want to work on is attaching an air jet (or whatever you call it). So far my every attempt to cut plastics (which I need for a number of projects) has ended up with a glob of plastic melted and bonded to the bit before I could get very far, even when I use single-flute bits. I'm hoping that having a jet of air blowing onto the bit will help disperse chips and keep the bit cool, allowing me to work with plastics.

The thing is, I might need to build myself a new controller box first, just to house all the components (things are a bit of a mess right now). I've been putting it off for a while, partly because I wanted to build a Beaglebone Black into the box but I couldn't get the BBBlack working properly. Seriously, if there's a trick to getting support with that thing, I don't know what it is. Every tutorial I tried to follow failed, and no-one answered me on the official forums.

Anyway, I've decided to put the BBBlack on hold, and build a controller box in such a way that I can run it directly off my laptop for now, but that I will be able to install another controller (like a Beaglebone or Raspberry Pi or whatever) later. It's a bit fiddly, but I think it should be doable.