My designs is alive)))

Thanks for info. But I think that full red/blue belt of copper wire is more than enougth for my needs. I can always add another cluster if I need more red circuits btw.

Smelters also looks almost like mine setup)

How do you control for overflow?

By buffering and consuming.

you can only use one side of the belt for delivery

try this:

It handles 2 full blue belts.

It is expandable: 2 splitter cascades for single blue belt + 1 extra.

New defence config. Efectiveness not guarantied. Use it at own risk (not tested yet)

I'm looking for help(...) any help or pics of ur own for ideas would be greatly appreciated, I'm having trouble at the moment doubling up items etc, such as needing advanced circuits for more than just one thing. Again, any help greatly appreciated. (...) I was just looking for a way to have things...

almost) You can always reinforce problem areas with mines and/or drones with repair packs

try this: