Desynthesis Endgame Guide

[Niwashi]

The optimal skill rating for desynthesis will now be displayed when selecting items in the Desynthesis window or viewing item descriptions.

Looks like that should be helpful. (The notes used a sword for their example, but I'll be really glad to get that in the item descriptions for fish, which don't otherwise indicate their level.)

[Keldion]

So, looking at that HW->SB gap, desynths at 10 dSkill above the rlvl gives about 0.60 exp (for GSM). Success rate is 80% at dSkill = rlvl, going up about 3.2% per dSkill above the rlvl and hitting 100% at 7 dSkill above the rlvl (99.2% at 6 above). dSkill gains start dropping off at that point, but I don't have enough data yet to say how fast. There are items at that point every 25 rlvls (180 -> 205 -> 230 -> 255). Chance at 15 dSkill below the rlvl should be 56% (35*1.6). Chance at 10 dSkill below the rlvl should be 64% (40*1.6). I don't have enough data for the exp gains at these points though.

I'm working to gather information on the exact desynth chances in the current patch iteration, and so far have observed the following.

dSkill = rlvl - 43 : 9.8%
dSkill = rlvl - 20 : 42.0
dSkill = rlvl - 19 : 43.4
dSkill = rlvl - 18 : 44.8
dSkill = rlvl - 7 : 60.2

The trend appears to weigh each full point of dSkill at 1.4% until (rlvl -5), when I expect the formula to leap from 63 to 80%.
With exactly 279 LTW desynthesis skill, the chance of success to desynth a Tigerskin Belt of Gathering (rlvl 279) is 70%. Thus, the base chance of success likely depends on the item's rlvl.

At some point, careful desynthesis and materia bonuses were modified. Each point of careful desynthesis (from Tinker's Calm and Bacon Broth) raises the success chance by 3.5%, while every melded materia raises your success rate by 7%.

[Shadygrove]

Currently GSM 303+ and Imperial Jade stuff is hardly worth desynthing anymore. Is it all dungeon drops from here?

[ChameleonMS]

Currently GSM 303+ and Imperial Jade stuff is hardly worth desynthing anymore. Is it all dungeon drops from here?

Yes dungeon gear is the only option today. SE does have a habit of unlocking Desynthesis at the even patches. Therefore, next week Verity, Deltascape normal and (maybe) Creation gear should become desynthable.

[Teiren]

So uh...is Blacksmithing desynthesis just virtually impossible to seriously get past 320 skill? Unlike in ARR and HW, there don't seem to be any housing items even. It's like the only option is Chromite and Susano weapons, which is just insane. Thankfully, I got lucky with a Shinryu weapon and got some Scales, which is awesome, but I want to get my skill higher before I take that risk again.

[Sibula]

I'm working to gather information on the exact desynth chances in the current patch iteration

I've been working on the desynth chances too. From collecting data since the launch of Stormblood I've figured that apparently bonus chance per meld, desynth chance when dskill=rlvl, and rate of increase in chance depend on item rlvl. The amount of increase per dskill seems to double when dskill>rlvl. Not sure about any of the formulas behind these.

Some data I've collected so far (I'm horrible at writing and spreadsheets):
My spreadsheet

[Ceallach]

So uh, not to nag, but will the Stormblood part of this guide be done any time soon?

[DrWho2010]

Bomb Stoves are an option for BSM desynth.

[Shadygrove]

So uh, not to nag, but will the Stormblood part of this guide be done any time soon?

Seeing as a fair bit of SB info has been haphazardly added to this thread, yet not incorporated to the front page dropdowns, I would guess not.

[BoazJochin]

is there a way to increase your desynthesis rate? I keep seeing melding what do you mean by that. Do you equip you crafting gear? is that what is being referred to? I am starting to level desythesis but not sure on how to proceed etc.