● Material Library — Updated for 2026

E-Flute Corrugated Cardboard — Laser Cost & Cutting Guide

Reference specs, per-sheet math, and laser settings for E-flute (~1.5mm) corrugated cardboard — the standard for packaging prototypes, POP displays, and quick dielines. Punch in your sheet price below for an instant per-part quote.

Material Reference

Nominal thickness
1.5 mm (0.06″, E-flute)
Construction
Single-wall fluted core, kraft liners
Density
130 kg/m³ (~8 lb/ft³, effective/bulk)
Standard sheet
24″ × 36″ (also 32″×40″, 48″×96″)
Typical CO² kerf
0.3–0.5 mm @ 30–50W
Suggested scrap allowance
10–12% sheet layout waste
Reference values for planning — corrugated board's effective density is dominated by the air gap in the flute, not the paper itself, so it doesn't compare directly to solid sheet goods. Always cut a test coupon before committing production stock.

E-flute is the thin, fine-flute corrugated most packaging prototypers reach for first — thin enough to fold cleanly for dielines and mockups, but still stiff enough to hold structural shape for a retail display or shipping insert test.

It's cheap enough to over-order and iterate. Where wood or acrylic pushes you to get the design right before cutting, cardboard's low per-sheet cost means the smart move is often cutting three quick revisions instead of agonizing over one — the material cost of a wrong dieline here is genuinely trivial.

The Formula

How the cost-per-part number is built

The same math the calculator above runs — worked out longhand, so you can sanity-check it against your own numbers.

Sheet area24″ × 36″ = 864 in²
Cost per sq. in. (raw)$8.00 ÷ 864 = $0.0093
+ Scrap allowance (11%)× 1.11
Cost per sq. in. (usable)$0.0103
Your part (6″ × 4″)24 in²
Material cost$0.25

Cardboard's low per-sheet cost means the material line is rarely what makes or breaks a packaging quote — machine time and design iteration usually cost more than the board itself, which is exactly why it's the right material to prototype in before committing to something pricier.

This is the material line only. A full shop quote adds machine time, labor, and finishing — KraftyQuote's cost engine rolls all of it into one number automatically.

Machine Settings

Starting points by laser, E-flute cardboard

Ballpark settings for a through-cut — flute direction changes how cleanly the edge cuts, so orient test strips both along and across the flute before committing to a layout. Always run a test strip first.

Laser Power Speed Passes Air assist
40W diode (xTool D1 Pro)100%8–10 mm/s1–2Yes
Glowforge (45W CO²)Full powerspeed 150–1701Yes
40W CO² (K40 / OMTech)50–60%18–22 mm/s1Yes
60W CO² (Boss / Epilog)35–45%25–30 mm/s1Yes
100W CO² (gantry/bed)25–30%35–40 mm/s1Yes
Common Questions

What makers ask before they cut

Why does my cut look scorched on one edge but clean on the other?

That's flute orientation — cutting along the flute channels lets heat and smoke vent differently than cutting across them, which changes the char pattern. Test both orientations on your specific layout before finalizing a production run.

Is all cardboard the same for laser settings?

No — this guide covers single-wall E-flute corrugated specifically. Chipboard or greyboard (solid, uncorrugated) is denser and cuts more like thin MDF, while double-wall corrugated needs meaningfully more power or passes than E-flute.

How should scrap allowance change for a packaging prototype vs a single cut part?

Packaging dielines usually nest tighter than random parts because the score lines and fold panels are designed to tile efficiently — 8–10% is realistic for a well-designed dieline, while one-off shapes cut without that planning run closer to 12–15%.

Related material pages

Quoting more than one material?

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