wana prank a friend is there such a thing as a orbital egg cannon?

I want to make a 3x3 entrance to a lava pit, that hides a secret base underneath. The pit can be at most a 7x7 area. I envision something where it clears a 5x5 area, then a 3x3 door opens up, but I'm really struggling to make it happen.

I have attached an image of my honestly pretty bad attempt, as well as my ideal lava look. Any help would be appreciated!

I have this 3x3 lava door, making use of an old mumbo design plus some to block off lava.

There's one issue though, the lava gets in the hole, and makes getting inside take forever, AND destroys the torches that power the pistons. How can I prevent the lava from getting in or remove it before it gets far?

I attached a picture of the current design, if you need any other angles let me know and I will oblige.

Moving the blocks horizontally looks challenging as hell. My guess is the only way to make it look like in the video might be some zero tick sorcery

Edit: Please excuse the framerate, that's Reddit doing its thing

Pretty much everything in the question. I know world eater exists but they''re not made to take the stuff and I don't know much about technical vanilla minecraft tbf.
Thanks for the help !

I’m currently working on the feasibility on a system of autonomous chest minecart.

The goal would be to allow players on my server to send chest minecart from a certain station to a specific station on a single loop track

E.g

A — B — C — D

A player send a minecart from A to C
Another send a minecart from A to B

My first experiment has been to use fullness to represent the « code » of each station (a shulker box + one token item represents a single of 1 from the comparator)

Do you have more efficient solution ?

i was making a tnt cannon when i realized i had to detect if the flying mashienes have been sent back. basically, i can detect if the flying mashiene is there or not. basically what i need is a pulse generator that generates a short pulse when a redstone signal turns off. only when it turns off tho, not when it turns on.

edit: found the awnser thanks for helping :)

I NEED helpp i have been trying for 3 days to use illmangos 320 furnace array but the one part of the shulker box breaker which uses pistons to push shulker boxes placed by dispenser into lava so that items get into a water stream JUST DOESN'T work no matter what I tweaked a few setting but still

Hi! I built this auto bottle refill for my clay farm and I can not figure out how to stop bottles flowing right through it when they should stop at the dispenser by the piston and only continue when they are empty after being used, any help is appreciated!

Does anyone know the best way to make either a 3x1 door or just a 2x1 with the bottom 2 logs?