Desynthesis Endgame Guide

[Nyalia]

So even if I desynth, say, Allagan equipment (only 70% at Level 100) and it fails or succeeds, no other Crafting Desynth will be affected right? (Just double-checking.)

Correct.

(Of course, that's assuming your combined desynth skill is at or below the 300.00 cap. See the exception explained above and in the OP for details.)