128 module
The first capacity step, and already double what an ordinary stack accepts.
Minecraft mod, server and client
Eleven crates, a slot going from 64 to 512, rows bought one module at a time, and a screen that splits into pages once the grid stops fitting.
The number sits on the crate rather than on a slot: a module dropped into the tab on the left edge of the screen lifts every slot at once, wherever inside it happens to be stored. The crate keeps the best offer rather than the sum, so a 256 module next to a 512 gives 512.
Hover to browse, click to keep.
Each tier is crafted by surrounding the previous one with the material that names the next, and the order follows how deep that material sits: coal a few blocks down, netherite from the lowest layer of all. The full table
The tab clipped to the left edge of the screen is not a fixed pair of slots but a column. The mod ships two cells, capacity on top and rows below it, and another mod can add more: the tab grows with them.
The first capacity step, and already double what an ordinary stack accepts.
Two 256 modules together still give 256: it is the best offer that counts, never the sum.
The last one the mod ships. The ceiling is not there: a slot goes to 32,767, and a module from elsewhere may ask for that.
A chest surrounded by planks. These add up instead of replacing each other, so a well equipped coal crate ends up bigger than a bare netherite one.
A hopper fills a container up to what an ordinary stack accepts and no further, whatever the target block can actually hold. The mod corrects that for its own crates, and it is the only part of DeepCrate that depends on what is installed beside it.
Every mechanic has its own, with the mod's numbers rather than orders of magnitude, and what it costs when you take it back apart.
The known defects are listed there, open and closed, so start by checking whether yours is already among them. If it is not: one sentence, the version number, and what the crate did instead of what it was meant to do.