Weapon grinding

Weapon Grinding (武器強化 - Weapon Strengthening) is the process of strengthening Weapons, increasing their ATP/TAP and PP by reasonable amounts. All weapons start at 0, and can be ground up to a maximum level of 10. The downside to grinding is that, in case it fails, the weapon will be lost.

How to Grind

In order to grind, you must first have Grinders with which to grind the weapon. The grinder must correspond to the Weapon Rank of the weapon you wish to grind (e.g. you must have a Grinder/C type Grinder or better in order to grind a C-Rank weapon). Different Grinders of the same Rank may be of different quality (represented by a number e.g. +1 or +4), thus affecting the success rate of the grinding. If you have the grinders, you must go to the Grinding Shop of the manufacturer of the weapon you wish to grind.

• GRM weapons can be ground on Parum.
• Yohmei weapons can be ground on Neudaiz.
• Tenora Works weapons can be ground on Moatoob.
• Kubara weapons can be ground on the Guardian's Colony.

Finally, remember to remove the weapon from the action palette before attempting to grind it! If you do not do so, you will not be able to grind the weapon.

Grinding Success Odds

The odds for the grinding process to succeed are dependent on one's Luck, the current grind level of the weapon (ranging from 0 to 9 for grinding to still be possible), and on the quality level of the grinder itself (ranging from +1 to +10). Just before the grind, this chances for success is described by the person behind the counter, when asking for confirmation. The content of this description is reflected in the following tables.

Luck level 0

Grinder vs. Weapon	0	1	2	3	4	5	6	7	8	9
+1	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Low	Very Low	Very Low	Very Low
+2	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Low	Low	Very Low	Very Low
+3	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Fifty-Fifty	Low	Low	Low
+4	Guaranteed	Very High	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Low	Low
+5	Guaranteed	Very High	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty
+6	Guaranteed	Very High	Very High	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty
+7	Guaranteed	Very High	Very High	Very High	Very High	High	High	High	High	High
+8	Guaranteed	Very High	Very High	Very High	Very High	Very High	High	High	High	High
+9	Guaranteed	Very High	Very High	Very High	Very High	Very High	Very High	High	High	High
+10	Guaranteed	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High

Luck level 1

Grinder vs. Weapon	0	1	2	3	4	5	6	7	8	9
+1	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Low	Very Low	Very Low	Very Low
+2	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Low	Low	Low	Very Low
+3	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Fifty-Fifty	Low	Low	Low
+4	Guaranteed	Very High	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Low	Low
+5	Guaranteed	Very High	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty
+6	Guaranteed	Very High	Very High	Very High	Very High	High	High	High	Fifty-Fifty	Fifty-Fifty
+7	Guaranteed	Very High	Very High	Very High	Very High	Very High	High	High	High	High
+8	Guaranteed	Very High	Very High	Very High	Very High	Very High	High	High	High	High
+9	Guaranteed	Very High	Very High	Very High	Very High	Very High	Very High	High	High	High
+10	Guaranteed	Guaranteed	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High

Luck level 2

Grinder vs. Weapon	0	1	2	3	4	5	6	7	8	9
+1	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Low	Very Low	Very Low	Very Low
+2	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Low	Low	Low	Very Low
+3	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Fifty-Fifty	Low	Low	Low
+4	Guaranteed	Very High	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Low
+5	Guaranteed	Guaranteed	Very High	Very High	Very High	High	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty
+6	Guaranteed	Guaranteed	Very High	Very High	Very High	High	High	High	High	Fifty-Fifty
+7	Guaranteed	Guaranteed	Very High	Very High	Very High	Very High	High	High	High	High
+8	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	Very High	High	High	High	High
+9	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	Very High	Very High	Very High	High	High
+10	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	Very High	Very High	Very High	Very High	Very High

Luck level 3

Grinder vs. Weapon	0	1	2	3	4	5	6	7	8	9
+1	Guaranteed	Guaranteed	Very High	Very High	High	Fifty-Fifty	Low	Very Low	Very Low	Very Low
+2	Guaranteed	Guaranteed	Very High	Very High	High	Fifty-Fifty	Low	Low	Low	Low
+3	Guaranteed	Guaranteed	Very High	Very High	High	Fifty-Fifty	Fifty-Fifty	Low	Low	Low
+4	Guaranteed	Guaranteed	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty
+5	Guaranteed	Guaranteed	Very High	Very High	Very High	High	High	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty
+6	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	High	High	High	High	High
+7	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	Very High	High	High	High	High
+8	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	Very High	Very High	High	High	High
+9	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	Very High	Very High	Very High	Very High
+10	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Very High	Very High	Very High	Very High	Very High	Very High

External Links

• PSU-Wiki's article (Japanese)