Gear question

Is it possible to add/change a weapon’s effects? Like say i have a spear. Can i change it’s effect from… spear… to useful or deadly or just add one or something? Do i have to make a new weapon? Can it be done at all?

Check out the Armorer skill.

So if i make a new weapon, i can increase the ob but put any effect i want on it?

If you can provide a description that makes sense, sure. What makes that spear useful compared to others?

Ahhhhhh. Okay. I gotcha! Thanks guys, i get it now!