I suspect that adhock doesn't actually do a lot of mining, since he mentioned only using the one limpet collector.
And it's not that profitable on top, at least in normal systems.
2. Yes actually but it's not very cost efficient. If you target something before you launch a collector drone then the drone will only bring you objects that fit the filter you set when you targeted something. IE: You target a fragment that has Platinum, the collector limit you fire will collect ONLY fragments that have platinum and ignore everything else until it expires. This is generally considered very limiting as if you switch to another type of asteroid, the limit won't pick anything up. You'd have to scrape it off by moving close to the asteroid and letting it kill your limpet before targeting something else. Generally it's usually a better idea to carry a half load of limpets because you'll wind up with more minerals then you do limpets if you don't care what you're grabbing.
This is why any miner worth their salt will tell you to avoid targeting anything when you fire off a limpet. I did that once by accident. Only collected half the fragments with the limpet that was active. When I moved to the next 'roid and started firing it didn't budge. I couldn't fire off a second collector because it was still active. Had to scrape it off and fire a clean one. They don't expire after bringing back one object.
I suspect that adhock doesn't actually do a lot of mining, since he mentioned only using the one limpet collector.
I checked the contact list and found I had two limpets and a scan of the radar found the second one hanging out under my ship in idle mode.
If you are wondering what happened there, the limpet was likely carrying a material and your inventory was full.
Nope. Not joking.
This is why any miner worth their salt will tell you to avoid targeting anything when you fire off a limpet. I did that once by accident. Only collected half the fragments with the limpet that was active. When I moved to the next 'roid and started firing it didn't budge. I couldn't fire off a second collector because it was still active. Had to scrape it off and fire a clean one. They don't expire after bringing back one object.
You stated that they would then only bring back (in your example) platinum. Wrong. They will bring back all fragments. I can only assume you hit a nice 'roid with only Platinum fragments to give you this impression.
If you are wondering what happened there, the limpet was likely carrying a material and your inventory was full.