mold
You have to make a mold and them inject them. Its a pain and not worth while if your only doing a few at a time. I had one mold made that had 13 or 16 cavities and then made a simple one with 48 cavities in cnc class. Probably going to spen $300-400 before you ever inject a single bait with all the stuff you have to buy. If you know someone who works on a cnc mill you can get the mold done. I paid $65 for the one mold and that was a steal. Probably spean $100 or so on the bits to make the other mold.
"Some days im Basstastic other days im crapptacular"