I am looking into possibly buying a 3d printer for printing in metal or ceramics.
The parts that I need to print are very small (less than 3mm square by less than 1 mm thick) they have very small features (protrusions) that are about 100 microns square.
I need to have an accuracy of +/- 20 microns or better.

Am I dreaming or is this now possible?
If so, who sells the machines that are capable of this and at what price range?

Thanks for your help,
Dan