Finding grinder base s?

[Phenom588]

What is the best place to find them, I just hit lvl 80 and I am a fortegunner, but I am also really good with acrofighter. I have nobody to play with so I will be soloing. I would like to try and get a bunch of grinder s+ stuff and since I can't seem to search in shops I need to get my own. Thank you for any and all help:-P

[darkante]

They drop rather easiely on the event mission.
Fifth floor on the Guardian Colony.

Also, save all those Olpad and Copernia as you can just turn them into Grinder Base S too.

[Sexy_Raine]

Do innocent girl until you unlock the doors for the first two areas. Once that's done, do it on C and race to the rooms where the Badges/material boxes are and restart once you opened them in the 2nd area. You'll have 2 copernia or olpad every 3 minutes.

Hope this helps.