If you're looking to train your weapon's profficiency fast and not lost any durability, then read this topic. First of all,
always bless your weapons, for if you don't, you'll waste alot of money.
Now the monsters I recommend to train on are the kobold bandits located in Reighinalt, which is right by the town of Bangor. This location is good because you're right next to a town to repair you weapon and other stuff and kobolds are fairly easy to train on, yet give a decent amount of exp.
Now if you're hardcore, you'll be able to get your weapon's profficiency up to 100 in about a day if you follow this. Also if you put on the lucky title and have your weapon blessed, the blacksmith Edern will have a near 100% chance of successfully repairing your weapon, saving alot of money if you chose to repair it with the pro blacksmith. Yep, that's all i wanted to say.