We have been using equipment made for this purpose by IS (same people that make the pumice scrubbers). Overall, we consider it a good machine. Really caked in router dust, e.g. in break-aways, still needs some personal attention. .010" won't make it through ours without help, although we rarely have need to; not sure about .220". Feel free to call or email through technet if you would like more info. Lyle Anderson Lundahl Astro Circuits 801-755-0349