lazy way to solve this is to tape a 1:1 scale printout of the pattern to the workpiece and use a center punch to mark the hole positions. you could also do this with a ruler and a pencil.

I'm not at all trying to say that you shouldn't use certain tools, especially if you have them set up. Do whatever is most expedient. If that means a $5,000 SLA printer, fine (lucky you!). If you're an Open Source advocate and there's a good FDM printer, great, use that. But none of it is _essential_ to this particular project.

This isn't an indictment aimed at the article's author, but when I see someone go "you don't need to use that fancy printer to make this simple object, you can use this slightly less fancy one," it makes me thing that techy people (including myself) are losing touch with how objects are traditionally made.