Here's the values I jotted down earlier from my 3* synth. You can do the math to figure out your progress with your Craftsmanship.
854 Craftsmanship
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No ING2
Basic Synthesis - 99
Careful Synthesis II - 119
Standard Synthesis - 149
Rapid Synthesis - 248
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With ING2
Basic Synthesis - 151
Careful Synthesis II - 182
Standard Synthesis - 227
Rapid Synthesis - 379
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Piece by Piece - 544
Piece by Piece (2nd one) - 365
Makers Mark grants a 17 stack.
Good luck figuring out your rotations.