Folks, you can use this website to generate 3-D models of terrain located on earth, which of course includes ISLANDS. An ".STL" file is created, which you can download for 3-D printing
I've got to assume it could be uploaded to Shapeways. I've never done it, but we've got some 3D modelers on the forum like Squint who might be able to help.
I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way. - Captain John Paul Jones
This guy owns a printer and can print these islands from the site you linked. Scroll down to a February 26th and 27th posts for details. I got some 3d village hexes for the land game from him and the quality is good.
When I did the capture of the map, I turned the x axis a bit way to give some definition, so it didn't end up looking too flat. I think Midway would barely show up even with x up all the way. I don't know if I would prefer this of just using painted modeling clay.
I listed it for sale, but no mark up for me, if someone wants to try and order it.