Reinforcing weapon or armor is a server sided!!! But there is a pattern on it.....
Reinforce 1-12 click right card
Reinforce 13 click left card
Reinforce 14-16 click right card
Reinforce 17 click left card
Reinforce 18-22 click right card
Reinforce 23 left card
Reinforce 24-26 click right card
Reinforce 27 left card
Reinforce 28-30 click right card
enjoy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
If anyone is wondering, this doesn't actually work. Tried his method, with a little easy Supernus belt just to see, and it failed and broke at +4. Smaller stuff is easy to +30, so it's likely it just worked, and the pattern had nothing to do with it.