Ratchet and Clank Cheats :
unLimited bolts 2
by Unregistered Jul 04, 2011
There is another unlimited bolt exploit besides the one in Kalebo III and Blackwater City, Rilgar. The only requirement for this one is the HeliPack.
You will also get a gold bolt if you do this. Go to Kerwan (the planet that you get the HeliPack on) and go to where the first Gadgetron vendor is. If you look down in front of you, you will see some ships going into some strange platform-ish thing.
Glide down into an opening below. You should be able to get a gold bolt and there should also be a bunch of other bolts there. You will notice a bunch of ships zooming past you overhead. Normally you would get bolts for hitting them with a weapon of some sort in a long distance, like a Visibomb Gun.
But since you are in that gold bolt secret area, you don't need to use any weapons other than your wrench. Jump toward any of the ships and use an Upward Slash with your wrench, like a hammer. If you have good aim, you should hit one of them. Since there is an unlimited supply of ships, that means an unlimited supply of bolts. Keep destroying ships with your wrench until your heart is content, then you can take a taxi back up to your ship.