I am not sure if the materials bug was finally fixed or not, but for a LONG time, using all choice mats (Choice shafts was found to be the offending item, ANYTHING under choice you could max the stats on amps, change shaft to choice, it dropped by almost 10 percent) would gain you a lesser Amp.
I haven't been grinding, I know of a few players that I am rather certain could make those. Of course the GUESS would be Sup Big shell for blade, and possibly a few other for points (oddly enough there are mats that are better points than blades that are as good as big shell and I would guess maybe better).
I learned on newbie that the cap of 10% protection on light armor is a "soft cap" meaning...the right clip (quartered mat, available on ALL newbie islands) could max the protection rate above 10.5%. I think the highest I ever managed was 11.5% (the other stats on the armor were a bit low, like piercing protection etc. but on newbie island...it was more important to me to have the full protection than the narrow angled ones.)
SO...I would surmise that your 100/100 weapon screenshot you have has a "mystery secret" quarted mat. (the armor clip was Gingo ligament FYI

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If the game wasn't such a grind...I would regain interest. I guess I could try on ATS to see if I could make it.
Since the Q rating shows as 120, and on ATS you are born at 150...Yeah I will accept that challenge...on ATS. I will work this week to see if ANY mob that I can solo drops anything that could make your super weapon...If I manage to make it, I will TRY to make a screenshot. I am not sure why...but my screenshot buttons don't work
If I do manage to make it but can't screenshot it, I will tell you, but I surely do NOT expect anyone to take my word for it. OH and I don't buy into SECRETS *mysterious finger wiggling*

If I find a comb that works...it WILL be posted, complete with ALL mats it takes to make it, including grade of mats, general location of node(IE 15m SE from Thesos billabong bridge, not sure if anything is really there FYI, that was just an example), the level and name of the mob that drops the secret material, and the exact kind of mats (IE Sup Big Shell, *PR location here*, Secret shaft mat here *insert name, level and location of mob that drops secret mat here*, fiber kind, counter weight*or not if lance/pike* and so forth).
Sorry if I tick off any crafters that LOVE their ubber secret knoweldge club, but...all good things come to an end *evil wicked grin*.
The screenie shows a sword, I am assuming two handed, but I will try one handed, two handed and also try for a 100/100 lance and pike. I will also try a medium and high quality as well as flaming. On ATS I haven't made it to other lands...so they will all be Fyros or Tryker (I would view the Tryker as the FULL challenge mode LOL).
If you have any further info you are willing to give about the item in that screenie, specifically the exact type of sword it was (ie high quality two handed sword, of Matis make) then please PM me. But I will take the challenge...even if you chose NOT to pm me.