I have the 3-phase rectifiers. They work pretty well.
For someone just starting out, I am in favor of using separate rectifiers.
This helps in troubleshooting .
fuse:
If your notes are correct, 1/2 your coils are revered, It could be just the photoshop though.
IF you have the rectifiers handy, try using 3 separate ones spin the mags and read each sets voltage, see where it's going. IF you have 3 cheapo voltmeters this will be easier to do.
My guess is your copper is setup for higher voltage , lower current. You state this is 3mm which is 9ga wire here in the US, and 3500 wraps?
Could you clarify this for us? That's quite a wrap you have there if it indeed it's 9ga wire, it's it's actually 0.04inch wire, that makes it 18ga wire and and a 3500 turn (wrap) would be easier. Especially for a beginner.
Cheers
Bruce S