Bear in mind that I have an A4 machine and am only cutting small parts...

I am thinking about trying a fridge compressor to provide a continuous stream of air to the tool and using a vacuum cleaner to remove chips. I am mainly going to machine acrylics and I know I have a lot to learn about, but with thermoplastic materials I understand that build-up on the tool will ruin work very quickly and easily.

The Vac is a Wickes workshop vac and I am thinking of making a holster with a microswitch in it to switch it of when the nozzle is put in it.

My view is against any shrouding round the cutter as I like to see what's going on.