Minecraft Cobblestone Generator

Ginger JEDI
Feb 19, 2016
3 min read

Hi, if like me you love building with cobblestone or you just want to build something that requires cobblestone, this automatic cobblestone generator is very handy as it allows you to make infinite amounts of cobblestone.

I used to use a more compact design for this but it seems the flow speed of water has increased. This causes countless problems. So I came up with this altered version that works much better. (The redstone circuit does occasionally glitch out but I suspect that’s a game glitch not a fault in the design.)

This is what your finished product will look like.

What you’ll need: ( for single cobblestone gen).

36 × Cobblestone blocks (Can be any solid non-flammable block, but I love building with cobblestone.)
1 × Piston(standard, NOT sticky)
1 × bucket of lava.
1 × bucket of water.
1 × stone button (a wood button requires more of a delay, hence more repeaters).
5 × redstone dust.
7 × redstone repeaters.

I’ll be showing you how to build it layer by layer.

It will be 5 block wide by 10 blocks long by 3 blocks high. I’ll be using a grid system to try make the explaining easier.(not counting the 15 odd blocks required for the cobblestone when fully extended from the generator).

1st layer:

The picture below shows the 1st layer of the design. Cobblestone stone blocks indicate required blocks while gold blocks are just added to fill up the space or for ease of building. I added the torches to make it easier to count the blocks.

As you can see the 1st layer is very simple. The grid system works with columns being notated by numbers and the rows by letters.

Row A is not unrequired blocks.
B2 and C2 is required, the rest of B and C aren’t.
D(2-9) is required, the rest of D and all of E aren’t.

2nd Layer

The second layer is where we add the water, lava and piston(Regular piston, NOT STICKY piston. This is very important).

Firstly place cobblestone:

A2,B(1,3-9),C(4-9),D(1,10),E(2-9).

Secondly place the piston @C3( by looking at the cobblestone block C4 when placing it ensuring the piston will extend outwards horizontally towards C2) followed by a cobblestone block @C1(this will separate the water and lava still to be added till we want them to contact).
Thirdly place the water source block @D9 and the lava source block @B2.
Lastly place the lava source block in the location shown.

3rd and final Layer

Now for the button and Redstone circuit (with 7 redstone repeaters) , which make it automated.

Place a stone button (rather important as using a wood button requires a longer delay and thus more repeaters) @B3.
(The button has been in outlined to make it easier to see.)
Place redstone dust on B(4,8,9),C(4,9).
Place repeaters facing towards 10 on blocks: B(5-7).
Place repeaters facing towards 1 on blocks: C(5-8).
Now to set the delays on the repeaters 1 repeater should be delayed once, all the rest should be set to max delay.

To start it up press the button once.

Congrats you have a cobblestone generator!

: )

If you’d like to increase production efficiently I will now show you how to modify your generator to produce 2 lines of cobblestone with minimal use of resources.

Double Cobblestone Generator

*N.B. I’ve altered the Grid for this design as it is larger please refer to the image below.

Break the redstone circuit temporarily and allow the charge to run out before modifying the generator.

Layer 1

Place cobblestone @B(2-9)

Layers 2 and 3

Place cobblestone blocks @ A(2-9),B(1,10),C(4-9)
@C3 place piston facing outward like the previous one.
Place redstone dust on C4 to connect piston to the circuit.
@C2 cobblestone block to block the lava and the soon to be added water from each other.
Place a water source block @B9.
Make sure the redstone circuit is complete and push the button to start up the circuit.
There should now be 2 rows of cobblestone coming out of the generator.

This is ideal for 2 people to mine at the same time, or if you just get frustrated by the fact that you can mine cobblestone faster than it can be generated.