Anyway, maybe once I get over my move and unpack my roomful of boxes of photo stuff I'll get back to the project of adapting an inkjet to apply Pt/Pd solutions.
Not to diminish or discourage your efforts, but would that work even theoretically? Has it been done? Aren't the print head's orifices metallic and heated? Wouldn't they clog with metallic Pt and Pd right away?