Original FSB thread and schematic are available here.
I've used an LM13700 instead of 2 LM3080.
Drawing it was quite complicated and it came out quite large.
Always double check the schematic before building an unverified layout.
(You may be able to use an LT1054 based voltage doubler but I'm not sure about noise level)
Special thanks go to Digi2t (Dino T.) for drawing this and many other schematics we've been using on this blog.
Here's his video: