I am scratching the whole laser/magnetron idea, instead going with a submerged build plate and a nickel wire feed. Will be printing in nickel, copper and titanium. Nickel should be easier to electroform, If the distances are kept very small high amperage may be possible and higher deposition rates possible.

The thickness of the nickel wire will determine the thickness of the printed lines. Deposition rates to be controlled by amperage and fines by close.

Watts nickel electroplating solution will be used and then titanium solution and 99.5% Titanium Ni Anode.

A cartesian build with a submersible silicone nickel graphite build plate should suffice. An attempt to disperse nano carbons in the liquid will be attempted and there will be circulation in the bath. The circulation nozzle will come out around the wire, using pressure to center the wire leaving the plastic nozzle.

A glass nozzle may be used, a pipette of say 10mL in 1mL per inch segments would work if placed in a geared housing to control depth

This way the whole target is bathed in nickel or titanium saturated fluid. The nano-carbons should be positively charged at the cathode as they are circulated close to the anode a electrostatic attraction should occur plating them in place.

The printer could also be used to print copper traces, lifted out of the bed, apply a mask and spray an insulator, remove the mask and plate a second level, and a third add infinitum.

The toxicity of the plating solutions is a concern so I am going to tackle that by plating in a sealable container. So as to not loose the plating solution. It is also imperative that some computer monitoring of pH is needed and adjustments made with the appropriate buffer or pH down/up solution.

Information below on the nickel plating solution.

https://www.nickelinstitute.org/~/media/Files/TechnicalLiterature/NPH_141015.ashx