Guides: estimating countertop jobs by the numbers

Answer-first guides on slab count, yield, kerf and edge offset, vein direction and rotation, DXF cleanup, layout validation, the 6-slab batch, and multifamily estimating — each grounded in real numbers from a published StoneNest demo job (Ridgeline Flats: 3 unit types, 108 units, 132 slabs, 81.6% yield) and shipped product config, not rounded estimates.

Slab count

How many slabs do you need for a countertop job?

Why slab count isn't a flat square-footage ratio, and what actually drives the number on a real multifamily job.

Slab yield

Countertop slab yield: what's a good number?

What the yield percentage on a nested layout actually measures, and what a good number looks like on a real job.

Multifamily

Estimating countertops for multifamily and apartment projects

Why multifamily bids nest by unit type and quantity, not by multiplying one kitchen's square footage by the door count.

Workflow

From DXF export to countertop slab count: how it works

The mechanical path from the DXF your ERP or CAD already exports to a validated slab count and cut-ready file.

Cutting setup

Kerf and edge offset: why your nest has to respect the saw

What kerf and slab edge offset actually are, why they have to be modeled inside the nest itself, and how getting them wrong quietly changes your slab count.

Vein & rotation

Vein direction and rotation policies in countertop slab nesting

How free rotation, 90-degree-only, and Vein Flow aligned policies trade yield against the vein direction the customer sees.

Bid confidence

Why deterministic nesting matters when money is on the line

A bid is a promise - the slab count behind it should never change on its own.

Import prep

Countertop DXF cleanup: open outlines, text junk, and what a clean import needs

The pre-import checklist that keeps a DXF from failing silently.

Cut-safe nesting

How every layout is validated before it can export

The second-opinion gate that blocks bad exports.

Production workflow

The 6-slab batch: how production shops actually cut

Why production shops nest and cut a few slabs at a time, not the whole job at once.

Multifamily

How to quote a 120-unit apartment job in an afternoon

A step-by-step run through turning a multifamily job into a defensible slab count in one sitting.

Free estimator

How to read the Try It estimator results

What the three sample unit packages in Try It are, how to read the slab-count-and-yield results panel, and when a job needs the full validated desktop workflow instead.

Fundamentals

What is slab nesting? A fabricator's plain-English guide

The plain-English definition of slab nesting, why a square-footage guess isn't the same calculation, and where it fits in a real multifamily bid.

Multifamily estimating

How many slabs for a 50-, 100-, or 200-unit building?

Why a bigger building isn't a bigger multiplier: the method that sizes a 50-, 100-, or 200-unit job from its unit mix, walked through on a real 108-unit job.

Material & estimating

2cm vs 3cm countertops: what the thickness actually does to your slab count

Everyone compares 2cm and 3cm on looks and price. The estimating question is different: a 2cm top built to read thicker needs buildup strips cut from the same slab.

Islands & support

Island overhangs: why every seating overhang needs support

The two standard numbers contradict each other: stone spans ~8in unsupported, and seating needs 12–15in. Every seating island is already past the limit.

Edges & estimating

Waterfall edges and mitered aprons: the piece a nester can't split

A waterfall leg is a full-height piece with nowhere else to come from. A vein-matched fold at the top constrains exactly where on the slab it can be cut.

Comparison

StoneNest as a Deepnest alternative for countertop shops

An honest side-by-side: Deepnest's free general-purpose nesting versus StoneNest's countertop-specific slab count, kerf and edge-offset modeling, validator gate, and AlphaCAM-ready export.

Comparison

What Slabsmith costs, and where StoneNest fits

An honest look at what Slabsmith does and costs, and where StoneNest's narrower nesting-and-cut-safe-DXF slice fits instead.

Comparison

Best nesting software for stone shops in 2026: an honest comparison

A plain, side-by-side look at four real nesting options — what each one costs, what it actually does, and why the bidding-and-cutting slice of the job is the one StoneNest was built to own.

Reference

Slab sizes & usable square footage, by material

Typical granite, quartz, and porcelain slab dimensions, plus a free browser tool that turns any slab size into gross area, area after edge offset, and a practical usable range by veining.