then the wood router (on the left) might be too large for it. It's also going to be fairly noisy. It would be better on a mid-size bench-top machine, and most suitable for wood work.
The Proxxon IB/E (on the right) is a lot smaller, so it might be more in scale with your machine. It's pretty fast at 20,000 RPM, has a wider range of collet sizes available and is probably more precise, but it's less powerful than the router. I've heard of people having success with them as CNC spindles, and they are fairly quiet and aren't too expensive. You can build an adapter that holds onto the round metal nose piece. I'd go with that one, for small projects that will require small tools.
You should note, though, that neither of these is a "drilling machine". Drills come with Jacobs chucks, that accomodate all shank sizes within their range. These machines only hold certain sizes of tools. You can use them to drill with, though, if you get a set of drill bits with a fixed shaft size and reduced diameters at the working ends.
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