Productivity modules can be used during rocket fuel production. This results in X+Y units of rocket fuel for every X canisters spent. When burned, each unit of rocket fuel yields one canister. Consequently, each cycle of using rocket fuel generates an additional Y new canisters, where Y depends on the productivity level applied during fuel production.

The productivity of rocket parts further compounds this issue, creating a feedback loop that amplifies the initial efficiency gains.

Productivity of the individual rocket silo plus the research bonus, is currently accounted for in calculating the reduced number of rocket fuel used at launch and subsequently the number returned. It could be there is a bug though, are you seeing something incorrect numerically?

Simply, you should not see a number of returned canisters greater than the number of rocket fuel used to launch the rocket. If you do see a net plus in canisters, I have work to do.

I am trying to point at the productivity of rocket fuel production. Look, it takes 10 solid fuel, 10 light oil and a canister. With productivity i get on average 1.16 rocket fuel from this recipe. Now, i also get 1.16 canisters from burning 1.16 rocket fuel, but used 1 canister in the first place. I get extra 0.16 canister every time i use a canister because i have +16% productivity in my rocket fuel production.

I see your point, the wonders of the productivity bonus.
This is true throughout the game though, not just canisters.

I think that would require a significant change. Rather than a canister being an ingredient, it would need to become a container of rocket fuel, like barreling. Only allowing a fixed amount of rocket fuel in a canister. So only 1.0 of the 1.16 rocket fuel is placed in a canister.

I could make a guess at the productivity bonus, the research bonus plus the average of from productivity modules (not loving this too much).

Or maybe greater adjustment in the attrition rate...
Attrition currently defaults to a max of 10%, which is below your bonus, so a net gain in canisters.
The next setting is 50% which should be on average a 25% loss which is greater than your bonus, so a net loss in canisters.

Allow setting any attrition value between 1 and 100?

Are you looking for a net 0 solution?

Or maybe the "random" attrition is not really worth much, I should change it to a fixed percent, and offer a 1 to 100 setting.

Net 0 solution is what i think it should be. This is the same reason why barrels are exempted from productivity. Removing productivity from rocket fuel production is not an option (there is infinite productivity tech for rocket fuel in the base game). Maybe… as you said - it would need to become a container of rocket fuel, like barreling. Space exploration had liquid rocket fuel. Maybe you can migrate everything with productivity to this new liquid and change recipe for rocket fuel (replace solid fuel and light oil with new liquid). But cross-mod compatibility will be tricky…

I sincerely apologize. My head is so wrapped in coding, I read your post as a bug report.

What you want to do is increase the attrition, the default is set at 10%. This should on average, be a 5% loss. Too low for your factory.
Change it to 50%, which should result in a 25% average loss.

There is also 100%, a 50% loss, and the "disposable" option which is a 100% loss.

This can help if i only use rocket fuel to launch rockets. But for example on Gleba i can use it to power heating towers, this is where productivity will get me.

I was composing my previous message as you posted.

Ahhhhh, gotcha!

In that context, this is a big issue. And an issue that I do not currently see a reasonable solution for.

Yes, but i am happy to use Canisters without reusable canisters option. Maybe it is worth considering to make this option off by default?

Canister is considered as a spent result for rocket fuel, so it will appear every time i burn rocket fuel, be it in heating tower, locomotive or in regular boiler. Modifying heating towers is in no way related to this.
![image] (https://ibb.co/k6zz036j)

Yup, unfortunately, reusable is not a viable option for SA.
Not sure what I will do, deprecating the mod is seriously under consideration. I will sleep on it.

Thank you very much for reporting the issue!
I uploaded version 0.1.1 that should resolve the issue, hopefully in a satisfactory manner.

Not sure if you are still trying the mod, but 0.2.0 is a significant upgrade.

This version uses a per surface setting for the rocket fuel productivity bonus (building + modules).
It will calculate that bonus on ticks, so for performance it is better to set the Assigned value.
In my testing, it calculates the correct number of Return canisters, up to the internal productivity cap of 300%.
The number returned should ensure a net negative on each planet.

I do, i like the challenge with canisters. The new refurbishing requirement is nice.

It is hard to be certain, but for example mod Muluna has defferent recipe's for rocket parts for different planets. All planets take 2 times more everything than Muluna and also they have different productivity infinite technologies for rocket parts. Take it into account, pls.

Version 0.2.5 has been uploaded. It should now correctly calculate the Muluna rocket part productivity bonus.

All planets take 2 times more everything than Muluna ...

Can you explain a bit more? Maybe a specific example?

I can't open game right now but as i remember (with Mulana mod active) - every 1 rocket part in rocket sylo on Muluna takes 1 processor, 1 LDS, 1 rocket fuel. But on other planets the same rocket part takes 2 processors, 2 LDS and 2 items of rocket fuel.

Version 0.3.0 has been uploaded, it should properly take this into account.