in that sort of a situation are you swimming in money?


I'm pretty sure that excess production is converted at some nominal rate into cash....    

Build more expensive ships. 

Honestly I've never cared enough to see where my economy in the game is coming from... but I think that excess production that would "drop off" after one turn is then turned into cash...

Most of the time by late game I'm usually making over 15k a turn...

That's a poor design decision. It slows down the game for no good reason.
 

The only way I have seen this happen is when I find a multiple anomalies that grant tech completion on the same turn.

Yes, but for unrelated reasons (my minimum net income after expenses per turn without incurring coercion penalties is over 5k in this game - all without having built a single wealth-related building).

Sometimes this is OK, but other times it isn't viable. When I am building constructors for mass starbase upgrading, I shouldn't be limited to one per turn when they cost 1/5th of my total production (using custom constructors built on huge hulls with tons of construction modules on board).

Some of the problem can be worked around by building more expensive ships, but that's just a band-aid - it doesn't fix the underlying issue. At the core we have a system that is badly broken for no good reason. It should be fixed.

I thought they didn't stack; I'll have to run a test on that.

1.7 won't be out today, but we are working on getting an opt-in out soon.

Welp, tried it out, and yes they stack. That's grossly effective.

This thread is a good indication that there is a bunch of new blood playing the game. Congrats Stardock.

If you have extra social manufacturing on a planet it gets stored in that planet's overflow. Hover over a blank spot in the queue to see how much you have stored. You can use this to your advantage to, for example, build expensive buildings in one turn or turn off social production to focus on research, wealth, or military, but continue to build improvements and upgrades on the planet. Be careful when queueing a "project" on planets with overflow. Projects swallow up all of the overflow, so make sure it's how you want to spend the excess. Beware that the benefit of some projects is capped. For example whether you have 1,000 or 10,000 social production in overflow, if you do birthing subsidies you will max out at 1.0 population per turn (I think), and your overflow will be gone after the turn. The military subsidies also eats up the overflow, but that production does NOT get sent to the shipyard (it's a bug, we think).

Shipyard overflow operates very similarly. One tactic I like to use is to chug out cheap constructors during the starbase spam phase. Assuming I have more than enough production to build one constructor per turn, it will store up production in overflow. Then when I'm ready to start chugging out military ships I have enough stored up to push out a ship per turn for several turns.

Conversion of production to wealth is a GalCiv2 thing. It is done in GalCiv3 through playing with the wheel, using planet focuses, or the wealth project. It's quite an inefficient conversion though so I prefer to make use of manufacturing as above.

As of the last time I played you can get a max of 5 starbases covering a planet and the bonuses stack. It's more if you unlock the sttarbase range techs, and I thought they were considering lowering the "distance between starbases" from 5 to 4 so you could maybe squeeze in more.

Even without sacrificing any traits you can with careful planning boost a planet by twelve starbases - of course this is when you use the starbase range extender modules. Economic starbases were ridiculous overpowered at 'starbase placement spacing' of 5 let alone now at 4.