The WD40 that i spray on the board helps with the cutting and also soaks up the dust. Haven't had to clean the mill since i started doing that and the cuts are so much cleaner than before i used it. Plus i think the spiral V-bit helps too with the cleanliness of the cuts.

I've been looking at spindles recently and think i have narrowed down the search to this one or very similar...

https://www.ebay.co.uk/itm/2-2KW-CNC...AAAOSweatelsZi

Decent power and RPM plus it's water cooled so it will be quieter and maybe last longer too.

Cheers

NM