alt Hacker NewsShameless plug: I’m workin on http://partforge.ai right now it’s mostly aimed at 3d printing but it can create laser cut sheet parts with dxf file exports and will support cnc routed parts with drill holes and socket diagrams built in in the near future. Board cut lists as a export is a little further out, but you can ask it for measurements of anything you build and it would probably be a pretty useful tool.
Just a little feedback: one of my most hated dark patterns in design is when you give the user the impression that they can try out your website but they actually can't. That's the case on your website: there is a text field making it seem like you can give your site a spin, but as soon as you hit the submit button, you get a pop-up telling you that you have to sign up first. And that after I already spend some (admittedly small) effort to craft a sample text.
I personally hate that pattern, and my default reaction is to immediately close the tab.
Perhaps you could change the landing page to avoid that negative first impression?