Due to the high cost of capped saber resources, I have not had many saber crafting experiences. I have found that a saber crafting tool is needed, and you need to stand close to the WDG station (click on the station to start crafting)
Resource quality needs to be as close to 1000 as is possible, as a Jedi has low crafting abilities.
450k sounds low for capped resources ..at least on BloodFin server, tho each server has a unique economy

With all that said, I was able to craft a 5th gen to 98% ...I was using HQ resources and a crafting suit with PUP's.