A slab is not a quantity. It is a stone, with a name.
In Marmos each slab is a row of its own, with its measurement, its photo and its history. An offcut is not a balance: it is a new slab pointing at the mother it came from. That is what lets the cutting plan choose among the stones in your yard rather than among generic catalogue slabs.
One row per stone
There is no quantity field. Ten slabs of the same granite are ten records, because they are not identical: each has its own real size and its own vein pattern.
An offcut is a slab with an origin
When a cutting plan is confirmed, the leftover becomes a new slab pointing at its mother. It can be used, measured and chosen like any other — and you know where it came from.
The photo with four corners
The slab is entered with its photo, and you mark its four corners on the image. From that comes the real rectangle, with the stone you will look at before deciding where to cut.
Scrap does not become stock
What lies inside the piece's rectangle and outside its outline is scrap, not usable leftover. Returning it to the yard would promise stone nobody can free — the mistake that makes a stock system lose the shop floor's trust.
You set the offcut floor
Below the size your shop chooses, leftover is scrap. Without that floor the yard fills with 40 mm strips nobody ever fetches and that pollute every future search.
The draw-down is recorded
Confirming the plan consumes the slab, creates the leftover and records both sides. It is not a number somebody lowered by hand.
Inventory talks to the rest of the shop.
The plan uses what exists
Cutting is planned over your slabs and your offcuts, at their real sizes.
Findable offcuts
Leftover returns to the yard as searchable stone, not as a note in a notebook.
A warning, never a block
If a slab is missing, the system warns. Only physical impossibility is refused — an optimiser that blocks a sale is one the counter learns to work around.
Buying with arithmetic behind it
You see how much stone became a piece and how much became waste, and buy the next slab knowing.
Questions about inventory
- Why can I not register "10 slabs of Bianco Siena"?
- Because they are not ten units of one item. Each slab has its own real size, its own vein pattern and, after the first cut, a shape of its own. A balance of ten hides exactly the information that decides where the piece gets cut.
- How does an offcut get into stock?
- By itself, when the cutting plan is confirmed: the slab that was cut is consumed and the leftover is born as a new slab, with its exact size and a pointer to its mother. There is no manual step to re-register leftovers.
- Do I have to photograph every slab?
- It is not compulsory, but it is what makes the inventory worth using to choose stone. With the photo and the four corners marked, whoever cuts looks at the vein before deciding the piece's position.
- Will the system stop me selling if a slab is missing?
- No. It warns. The only refusal is physical impossibility — a piece that fits on no slab. Blocking a sale over stock is the kind of lock the counter learns to bypass, and then the whole inventory stops being trusted.
- Can I use the inventory without making a cutting plan?
- Yes. The cutting plan is optional: the order goes to production with or without it, and drawing the slab down is a choice, not an obligation.
Stone inventory is geometry, not counting.
In Marmos the slab, the offcut, the cutting plan and the drawing speak the same language — millimetres.