you can alway go mathematics. I mean if you can obtain somehow adena or aa or enchant or anything that make you able to have unlimited weapons / enchants do :
"10 system" Make 10 weapons to +5. From this 5 make as many as possible to +6. If you have for example 7x +6, make again new weapons to +5 and enchant to +6 until you have 10x +6 .... then again to make 10 x +7 ... etc etc etc. Yes it a little hard and obtain a little time but is a 100% method becous it is 99,9% sure that min only 1 weapon will succed enchant to nex lvl. Good Luck
:))
(ps. i know it nothing new but i only said my way to do it. - now running with +13 homonkulus on 5x serv PWNED :D hehe)
Cheers