[Jan Mrázek]’s success with 3D printing a solder paste stencil is awfully interesting, though he makes it clear that it is only a proof of concept. There are a lot of parts to this hack ...

and the stencil shifts, making a mess and smearing ... A PCB jig generated by OpenSCAD Maybe it’s time to try Stencilframer, a 3D-printable jig generator created by [Igor].