Desynthesis Endgame Guide

[Nyalia]

So its good if I bring my goldsmith to 50

Desynthesis and crafting are not linked, except that you need to have a crafting class at level 30 or higher in order to start desynthing in that class. Having a crafting class any higher than 30 has no impact on your ability to desynth things.

If you want to make your own MCDs, there are two best options (and a few okay ones):

(1) Get BSM to 30 and CRP to 50, then BSM desynth to ~85+ and CRP to 3* crafting. Make HQ Spruce Plywood, which you can trade in for Artisan's Chocobotail Saws, which you can desynth with BSM desynth.

(2) Get GSM to 30 and WVR to 50, then GSM desynth to ~85+ and WVR to 3* crafting. Make HQ Silver Brocade, which you can trade in for Artisan's Needles, which you can desynth with GSM desynth.

As a note, you'll need CRP at 50 regardless to do endgame crafting, including making HQ Silver Brocade. It's a requirement for any endgame crafting due to the skill.