Weapon grinding

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Weapon grinding is the process of strengthening weapons, increasing their ATP/TP and PP by reasonable amounts. For a list of the stat increases by weapon type and maker, please see Weapon grinding (Stat Increases).

All weapons start at 0, and can be ground up to an initial maximum level of 10. The downside to grinding is that, if grinding fails, the weapon will be reset to zero and will lose one maximum grind chance.

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.

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 Photon Fortune (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 possible messages and shorthand notations that will be used for the tables below are as follows. Please note that these are merely an indication, and that the actual chances DO vary even within these categories! Also note that "Guaranteed" is NOT 100%.

Shorthand In-game message Actual chance
Guaranteed There is no chance of failure. 95.0%~100.0%
Very High The probability of success seems very high. 80.0%~94.9%
High The probability of success seems high. 60.0%~79.9%
Fifty-Fifty The probability of success seems to be about fifty-fifty. 40.0%~59.9%
Low The probability of success seems low. 20.0%~39.9%
Very Low The probability of success seems very low. 5.0%~19.9%
No Chance There is no chance of success. 0.0%~4.9%

Based on a Japanese guide and available knowledge regarding rates, it can be concluded that 'L1' and 'L2' Photon Fortune increase grinding success by at most 3.0%, while the increment for 'L3' could have a range from 5.0 to 7.0%.

Online Weapon Grinding Success Rate Tables

C-rank weapons

Photon fortune LV0
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
Photon fortune LV1
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 Very Low Low Low Low Low Low Fifty-Fifty Fifty-Fifty  ? High
8 -> 9  ?  ?  ?  ?  ?  ?  ?  ?  ? High
9 -> 10  ?  ?  ?  ?  ?  ?  ?  ?  ? High
Photon fortune LV2
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 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 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 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
Photon fortune LV3
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 Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
9 -> 10 Very Low  ? Low Low  ?  ? Fifty-Fifty Fifty-Fifty High High

B-rank weapons

Photon fortune LV0
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  ?  ?  ?  ?  ?  ?  ?  ? High High
7 -> 8  ?  ?  ?  ?  ?  ?  ?  ?  ? High
8 -> 9  ?  ?  ?  ?  ?  ?  ?  ?  ? High
9 -> 10 No Chance Very Low Very Low Low Low Low Low  ? Fifty-Fifty High
Photon fortune LV1
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 Very Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
7 -> 8 Very Low  ?  ? Low  ?  ?  ?  ?  ? High
8 -> 9 Very Low  ?  ? Low  ?  ?  ?  ?  ? High
9 -> 10 Very Low Very Low Very Low Low Low Low Low  ? Fifty-Fifty High
Photon fortune LV2
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 Fifty-Fifty Fifty-Fifty High High High
7 -> 8 Very Low  ?  ? Low  ?  ? Fifty-Fifty Fifty-Fifty High High
8 -> 9 Very Low  ?  ? Low  ?  ?  ? Fifty-Fifty Fifty-Fifty High
9 -> 10 Very Low Very Low  ? Low Low Low  ?  ? Fifty-Fifty High
Photon fortune LV3
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 Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
7 -> 8 Very Low Low Low Low Low 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

A-rank weapons

Photon fortune LV0
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 High High Very High Very High Very High Very High Very High Very High Very High Very High
3 -> 4 Fifty-Fifty High High High High High High High High Very High
4 -> 5 Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High
5 -> 6 Very Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
6 -> 7 Very Low Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High
7 -> 8 Very Low Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High
8 -> 9 Very Low Very Low Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty High
9 -> 10 No Chance Very Low Very Low Very Low Very Low Low Low Low Fifty-Fifty Fifty-Fifty
Photon fortune LV1
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 High High Very High Very High Very High Very High Very High Very High Very High Very High
3 -> 4 Fifty-Fifty High High High High High High High Very High Very High
4 -> 5 Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High
5 -> 6 Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
6 -> 7 Very Low Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High
7 -> 8 Very Low Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High
8 -> 9 Very Low Very Low  ? Low Low Low Low Fifty-Fifty Fifty-Fifty High
9 -> 10 No Chance Very Low Very Low Very Low  ? Low Low  ? Fifty-Fifty  ?
Photon fortune LV2
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 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 High Very High Very High Very High Very High Very High Very High Very High Very High Very High
3 -> 4 High High High High High High High High Very High Very High
4 -> 5 Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High Very High
5 -> 6 Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
6 -> 7 Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
7 -> 8 Very Low  ? Low Low Low  ? Fifty-Fifty Fifty-Fifty  ? High
8 -> 9 Very Low Very Low  ? Low Low Low  ? Fifty-Fifty Fifty-Fifty High
9 -> 10 No Chance Very Low Very Low Very Low  ? Low Low  ? Fifty-Fifty  ?
Photon fortune LV3
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 High High High High High Very High Very High Very High
4 -> 5 Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High Very High
5 -> 6 Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
6 -> 7 Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
7 -> 8 Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
8 -> 9 Very Low Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High
9 -> 10 No Chance Very Low Very Low Very Low Low Low Low Fifty-Fifty Fifty-Fifty High

S-rank weapons

Photon fortune LV0
Grind Grinder
+1 +2 +3 +4 +5 +6 +7 +8 +9 +10
0 -> 1  ?  ?  ?  ?  ? Very High Very High  ?  ?  ?
1 -> 2  ?  ?  ?  ?  ?  ?  ?  ?  ?  ?
2 -> 3 Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High  ?
3 -> 4 Low  ? Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty  ?  ? High  ?
4 -> 5  ?  ?  ?  ?  ?  ?  ?  ?  ?  ?
5 -> 6 Very Low  ? Low Low Low Low  ?  ? Fifty-Fifty  ?
6 -> 7 No Chance  ? Very Low Very Low Low Low  ?  ? Fifty-Fifty  ?
7 -> 8 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
8 -> 9 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
9 -> 10 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
Photon fortune LV1
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 High High Very High Very High Very High Very High Very High Very High Very High Very High
2 -> 3 Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High Very High
3 -> 4 Low  ? Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty  ?  ?  ?  ?
4 -> 5  ?  ?  ?  ?  ?  ?  ?  ?  ?  ?
5 -> 6 Very Low  ? Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty  ?
6 -> 7 No Chance  ? Very Low  ?  ? Low Low  ? Fifty-Fifty  ?
7 -> 8 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
8 -> 9 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
9 -> 10 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
Photon fortune LV2
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  ?  ?
1 -> 2  ? Very High Very High Very High Very High Very High Very High Very High Very High Very High
2 -> 3 Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty  ? High High High High Very High
3 -> 4 Low  ? Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty  ?  ?  ?  ?
4 -> 5  ?  ?  ?  ?  ?  ?  ?  ?  ?  ?
5 -> 6 Very Low  ? Low Low Low  ? Fifty-Fifty Fifty-Fifty  ?  ?
6 -> 7 No Chance  ? Very Low  ?  ? Low Low  ? Fifty-Fifty  ?
7 -> 8 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
8 -> 9 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
9 -> 10 No Chance  ?  ?  ?  ?  ?  ?  ?  ?  ?
Photon fortune LV3
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 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 Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High High High Very High
3 -> 4 Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High High High
4 -> 5 Very Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
5 -> 6 Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty Fifty-Fifty High High
6 -> 7 No Chance Very Low Very Low Low Low Low Low Fifty-Fifty Fifty-Fifty High
7 -> 8 No Chance  ?  ?  ?  ?  ?  ?  ?  ? High
8 -> 9 No Chance  ?  ?  ?  ?  ?  ?  ?  ? Fifty-Fifty
9 -> 10 No Chance  ?  ?  ?  ?  ?  ?  ?  ? Fifty-Fifty

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 Low High Guaranteed
7 -> 8 Very Low Very Low Low High Guaranteed
8 -> 9 No Chance Very Low Low High Guaranteed
9 -> 10 No Chance Very Low Low 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


Gameplay

Photon arts | Skills | Bullets | TECHNICs | Item synthesis | Weapon grinding | Set bonuses | Partner machines | Elements | Status effects | Stats | Formulae | Enemies | Enemy spawn charts | Photon Fortune

Retrieved from "http://wiki.phantasystaruniverse.net/index.php?title=Weapon_grinding&oldid=28907"