Hello! I made this guide to show you how to make a cobble generator that is speedy, easy to use and solves the common problem with big generators: Having to run around to get the cobble. Enjoy.
Step 1: Materials
4 Water Buckets
3 Buckets of Lava
Step 2: Digging Down
Dig a hole the same as the one in the photo.
Step 3: Autocollector
Place your 6 signs according to the photo. Next, Place your water also according to photo.
Step 4: Fire And.....Water?
Add the temporary stone barrier then the lava and water. Break the barrier on the water side first. You now have a Cobblestone Generator with a Autocollector. :)
Step 5: Optional
Follow the photo if you want to increase the output because sometimes the cobble doesnt fall into the water stream. Replace the signs under the water with more blocks. ( The barriers are just there to stop the water and lava. )