Ordering cnc work online

Hi guys,

I have this small work I want to create using cnc machinning (kind of an iron stamp to heat and engrave on wood - 3cm in diameter).

Do you know any good, affordable cnc workshop I can order small jobs like these? It's only 1-2 pieces.

And to get the price estimate from the workshop what kind of solidworks format do you send? is it .stl?

Thanks,

Sharon

SolidworksGeneral