PCB stencils make application of solder paste a snap, but there’s a long, fussy way to go before the paste goes on. You’ve got to come up with some way to accurately align the stencil o… ...

Thanks for that! It’s been quite a while since I last designed a PCB, and it was easy to solder by hand. But if I ever need to do the paste-and-stencil thing, I’ll definitely 3D print the stencil.