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, if 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 found on Parum.
• Yohmei weapons can be found on Neudaiz.
• Tenora Works weapons can be found on Moatoob.
• Kubara weapons can be found 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 the following factors:

• Online/Offline
• One's Luck (only applicable online)
• The current grind level of the weapon (ranging from 0 to 9 for grinding to still be possible)
• The quality level of the grinder itself (ranging from +1 to +10 online; from +1 to +5 offline)

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.

Online

C-rank Weapons

Luck level 0

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
3 -> 4	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	High	High	High	High	High	High	High	High	Very High	Very High
5 -> 6	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High	High
6 -> 7	Low	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High
7 -> 8	?	?	?	?	?	?	?	?	?	High
8 -> 9	?	?	?	?	?	?	?	?	?	High
9 -> 10	?	?	?	?	?	?	?	?	?	High

Luck level 1

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
3 -> 4	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	High	High	High	High	High	High	High	High	Very High	Very High
5 -> 6	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High	Very High
6 -> 7	Low	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High
7 -> 8	?	?	?	?	?	?	?	?	?	High
8 -> 9	?	?	?	?	?	?	?	?	?	?
9 -> 10	?	?	?	?	?	?	?	?	?	?

Luck level 2

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Very High	Very High	Very High	Very High	Very High	Very High	Guaranteed	Guaranteed	Guaranteed	Guaranteed
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
3 -> 4	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	High	High	High	High	High	High	High	Very High	Very High	Very High
5 -> 6	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High	High	Very High
6 -> 7	Low	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High
7 -> 8	Very Low	Low	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High
8 -> 9	Very Low	Low	Low	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High
9 -> 10	Very Low	Very Low	Low	Low	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High

Luck level 3

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Guaranteed	Guaranteed
3 -> 4	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	High	High	High	High	High	High	Very High	Very High	Very High	Very High
5 -> 6	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High	High	High	Very High
6 -> 7	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High
7 -> 8	Very Low	Low	Low	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High
8 -> 9	Very Low	Low	Low	Low	?	?	?	Fifty-Fifty	High	High
9 -> 10	?	?	?	?	?	?	?	Fifty-Fifty	High	High

B-rank Weapons

Luck level 0

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
1 -> 2	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
3 -> 4	High	High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	Fifty-Fifty	High	High	High	High	High	High	High	High	Very High
5 -> 6	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High
6 -> 7	?	?	?	?	?	?	?	?	?	?
7 -> 8	?	?	?	?	?	?	?	?	?	High
8 -> 9	?	?	?	?	?	?	?	?	?	?
9 -> 10	?	?	?	?	?	?	?	?	?	?

Luck level 1

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
3 -> 4	High	High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	Fifty-Fifty	High	High	High	High	High	High	High	Very High	Very High
5 -> 6	Low	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High
6 -> 7	?	?	?	?	?	?	?	?	?	?
7 -> 8	?	?	?	?	?	?	?	?	?	High
8 -> 9	?	?	?	?	?	?	?	?	?	?
9 -> 10	?	?	?	?	?	?	?	?	?	?

Luck level 2

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
3 -> 4	High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	High	High	High	High	High	High	High	High	Very High	Very High
5 -> 6	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High	Very High
6 -> 7	Low	Low	Low	Low	?	?	Fifty-Fifty	?	?	?
7 -> 8	?	?	?	?	?	?	?	?	?	?
8 -> 9	?	?	?	?	?	?	?	?	?	?
9 -> 10	?	?	?	?	?	?	?	?	?	?

Luck level 3

Grind	Grinder
	+1	+2	+3	+4	+5	+6	+7	+8	+9	+10
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Guaranteed	Guaranteed
2 -> 3	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
3 -> 4	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High	Very High
4 -> 5	High	High	High	High	High	High	High	Very High	Very High	Very High
5 -> 6	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	High	High	High	High	Very High
6 -> 7	?	Low	Low	?	?	Fifty-Fifty	?	?	?	High
7 -> 8	?	?	?	?	?	?	?	?	?	High
8 -> 9	?	?	?	?	?	?	?	Fifty-Fifty	?	High
9 -> 10	?	?	?	?	?	?	?	?	?	High

Offline

C~A-rank Weapons

Grind	Grinder
	+1	+2	+3	+4	+5
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
2 -> 3	High	High	Very High	Very High	Guaranteed
3 -> 4	Fifty-Fifty	High	High	Very High	Guaranteed
4 -> 5	Low	Fifty-Fifty	Fifty-Fifty	Very High	Guaranteed
5 -> 6	Very Low	Low	Fifty-Fifty	High	Guaranteed
6 -> 7	Very Low	Very Low	Fifty-Fifty	High	Guaranteed
7 -> 8	Very Low	Very Low	Fifty-Fifty	High	Guaranteed
8 -> 9	No Chance	Very Low	Fifty-Fifty	High	Guaranteed
9 -> 10	No Chance	Very Low	Fifty-Fifty	High	Guaranteed

S-rank Weapons

Grind	Grinder
	+1	+2	+3	+4	+5
0 -> 1	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
1 -> 2	Guaranteed	Guaranteed	Guaranteed	Guaranteed	Guaranteed
2 -> 3	Very High	Very High	Very High	Very High	Guaranteed
3 -> 4	High	High	High	Very High	Guaranteed
4 -> 5	High	High	High	Very High	Guaranteed
5 -> 6	Fifty-Fifty	Fifty-Fifty	Fifty-Fifty	Very High	Guaranteed
6 -> 7	Low	Fifty-Fifty	Fifty-Fifty	Very High	Guaranteed
7 -> 8	Low	Low	Fifty-Fifty	Very High	Guaranteed
8 -> 9	Very Low	Low	Low	High	Guaranteed
9 -> 10	Very Low	Very Low	Low	High	Guaranteed

External Links

• PSU-Wiki's article (Japanese)