With a goldsmithing level of 15 I got a few skill-ups from desynthing this, so the cap is at least 16 (probably higher, since the Brass Subligar's normal synth is capped at 16).
I tried to break this down yesturday. Im currently at 26 goldsmithing so i thought I wouldnt have any trouble. After failing on 4 other subligars I finally was successful on breaking 1 and got 3 grass thread. Anyone wanna tell me whats up with that?
brass subligar requires a bronze subligar. the bronze subligar is made up of Bronze Sheet, Grass Cloth, Sheep Leather. and the cloth is made of 3 grass threads. apparently u didnt HQ desynth. i think that hq1 is the sheep leather, and hq2 is the bronze sheet. do.o`
he/she meant what was up with the fail/desynth ratio. All I can say is that desynthing is much different than synthing. a 100 crafter can have problems desynthing a lv 10 item, but facing right day, right moon phaze, with lightning element in your mh, with a sheep farting AGAINST the wind, you might have better chances.
I looted them off a goblin thug ( I think) in Inner Horutoto ruins ... the section with all the cracked walls. If it wasn't a thug, it was a weaver since those are the only two types in that section of the Ruins.