Why Ingenuity I and not Ingenuity II ?

[Faeye]

Ingenuity I costs 24 CP. Ingenuity II costs 32 CP. For raising quality, Ingenuity I and II are identical. For raising progress, Ingenuity II is better than Ingenuity I, but you can raise your base craftsmanship to the point where Ingenuity I will allow you to fill progress 100% in two Standard Syntheses, same as Ingenuity II. Ingenuity II has its uses when you're using Careful Synthesis II, but otherwise, the extra CP consumed isn't worth it. It's useful enough that you should get it eventually, but if you're just starting out crafting, it'll do to get BSM to 15 and proceed to CRP.

Ing I + 2 x Standard Synthesis = 24 + (2 x 15) = 54CP

Ing II + 3 x Careful Syntheses II = 32 +0 = 32CP

@OP
Get your Carpenter up to 50. BB is great for all kind of crafting.
Then get your BSM to 50. Ing II will save your money from forbidden melding in long run.

[Roth_Trailfinder]

Ing 1 + 2 Standard Synth = 20 Durability

Ing 2 + 3 Careful Synth = 30 durability

That's the main difference.

[jgg1988]

Thanks guys! And Ingenuity also works with the HQ progress?

[Faeye]

Ing 1 + 2 Standard Synth = 20 Durability

Ing 2 + 3 Careful Synth = 30 durability

That's the main difference.

Right, I forgot to mention that. but wouldn't it require like 360 craftsmanship to finish with Ing1 + 2 Standard Synthesis?
Scratch that. That was dumb of me.

[StouterTaru]

Ing 1 + 2 Standard Synth = 20 Durability

Ing 2 + 3 Careful Synth = 30 durability

That's the main difference.

BUT, those two standard syntheses require steady hands to remain up, the three careful syntheses do not. Depending on your rotation, this could mean a 3rd steady hands for an extra 22 CP, or not.

Ing I + 2 x Standard Synthesis = 24 + (2 x 15) = 54CP

Ing II + 3 x Careful Syntheses II = 32 +0 = 32CP

The math above doesn't work; when you have enough craftsmanship to finish with Ingenuity I and 2 Standard Synthesis, you're well past the point where you need Ingenuity II to finish with 3 Careful Synthesis. Those might have been swapped, and the poster meant Ingenuity II and 2 standard synthesis (62 CP + possibly an extra 22 CP) vs Ingenuity I and 3 careful synthesis (24 CP). That leaves 38/60 CP for 10 durability, which depends on your rotation.

[XLauncher]

Ing I + 2 x Standard Synthesis = 24 + (2 x 15) = 54CP

Ing II + 3 x Careful Syntheses II = 32 +0 = 32CP

So, Ingenuity II is useful if Careful Synthesis II is available and should be made an eventual goal. Like I said.

[kukurumei]

So, Ingenuity II is useful if Careful Synthesis II is available and should be made an eventual goal. Like I said.

Depends on your craftmenship, you can fall short with carefulII synth even with II.

Generally speaking you should never need to use ingenuity if you have ingenuity2, because it applies to more then syth, but sometimes CP works out that way. The point is to calculate your CP needs and then work your way to "just enough" sometimes ingenuity is the saving of "just enough".

[zsedc]

Ing II will save your money from forbidden melding in long run.

Doubt you can use Ing II when melding, how does it save money from forbidden melding?

[Faeye]

Doubt you can use Ing II when melding, how does it save money from forbidden melding?

sorry, I word poorly. That's not what I meant.
Ing II allow us to finish HQ 2 stars with lesser stats requirement which equate to lesser requirement in forbidden melding and/or melding.