So I've had an itching lately for blowing things up. I want to play with a TNT cannon that I've only been able to gather enough gunpowder for one shot in the past month. That means I need a LOT more gunpowder but I don't want to cheat to get it either.
So whats the best way to get gunpowder? Kill Creepers. What's the safest way to kill em? Drown em! So I did some research and came across this monster trap in these two videos. Props to Colbycheeze for the videos.
So now I have a basic blueprint, time to build! First I need a place to build my trap, hmmmm.. time to dig!
I won't go too deep for this.
The bottom of the trap, that is where I stand so all the drops float right to me.
As you can see, the monster will sink to where the glass is in the distance and drown. Their drops will float out from under the glass to me. Notice also how I have the ladder above the water so it doesn't interfere with the current?
The room above is the second safe zone, notice the cactus plants in the wall? They catch spiders since spiders are so big and can't fit down the drowning hole. Spider drops fall in to the hole as they die and float to me. I also made good use of lighting and storage chest placement so I don't hurt myself accidentally against the cactus.
It's hard to see in this shot, but notice how the water stop just at the edge of the drowning pool drop? That is a key thing about the whole water trap. Also those above floor glass walkways make a nice safe way to pull monsters from the back of the trap area.
This final shot is a view of what a monster would see if they spawned back against the far wall. The lights leading up to the water wouldn't normally be there so it'd be pitch black in this area with the exception of the center trap area shining the in the distance.
Notice my service tunnel in the ceiling near the edge of the water on the right? That lets me go out in the dark zone and mine the area surrounding the trap further back. I'm collecting a ton of gunpowder now and I've had some nice explosions along the back walls clearing out space. The more empty dark space you have the more monster spawn up to 200 I think.