In my day, which was well before even things like half blocks, you would just put a block on the floor, then an empty space, then the roof. Since that left only one block open, you could still throw stuff into the incinerator, but it was hard to accidentally enter it.
Ah no, my thing is also before half blocks, iirc you used a covered water block to create a current where you threw your stuff, which then went into a stair down, and them somehow filtered. Was it with an opened trap door? Those don’t allow liquid flow even if opened but items do flow, and that into a lava block below. Not sure on the trap door, maybe there was some other material.
In my day, which was well before even things like half blocks, you would just put a block on the floor, then an empty space, then the roof. Since that left only one block open, you could still throw stuff into the incinerator, but it was hard to accidentally enter it.
Ah no, my thing is also before half blocks, iirc you used a covered water block to create a current where you threw your stuff, which then went into a stair down, and them somehow filtered. Was it with an opened trap door? Those don’t allow liquid flow even if opened but items do flow, and that into a lava block below. Not sure on the trap door, maybe there was some other material.