How long does laser engraving take? For a filled-in wood coaster, expect 6 to 8 minutes on a typical 60W CO2 machine. For an 8x10 photo on wood, 45 to 60 minutes. For a small logo on a leather patch, under 2 minutes. The real answer comes from one formula: engrave area, line spacing, and machine speed multiply together into minutes, and once you can estimate those numbers you can price jobs, plan market inventory, and tell customers honest lead times instead of guessing. This guide walks through the time math in plain language, gives measured times for the products people actually sell, explains which settings safely cut job time by a third or more, and shows you how to log your own jobs so every quote from now on is based on your machine, not somebody else's video.

The time math: area, line spacing, and speed

Engraving a filled area is a raster process, which means the laser fills the design line by line, like an inkjet printer laying down rows of ink. Your three variables are the height of the engraved area, the line spacing, and the speed. Line spacing is the distance between consecutive scan lines, usually 0.05 to 0.2 mm, and it is what people mean when they say DPI: 0.1 mm spacing works out to about 254 DPI, and 0.2 mm to about 127 DPI. Tighter spacing means finer detail and proportionally more time.

The estimate formula is simple: rows multiplied by row length, divided by speed. A 90 mm square coaster engraved with full-coverage art at 0.1 mm spacing and 250 mm/s has 900 rows of 90 mm each, which is 81 meters of travel, or about 5.4 minutes of pure beam time. Real jobs add 20 to 40 percent on top for the head slowing down at the edges of each row, so call it 6 to 8 minutes. Doubling the line spacing to 0.2 mm cuts that to roughly 3 to 4 minutes with almost no visible difference on simple logos.

Numbers like these are why a "quick little engraving" can quietly eat an evening: a full-coverage design at fine spacing travels hundreds of meters. Outline-only work, by contrast, travels centimeters and takes seconds. Knowing which kind of job you are quoting is half the answer.

Typical times for common products

All times below are measured on a 60W CO2 machine with typical acceleration overhead included. Diode machines run similar raster times at their faster speeds but often need extra passes for depth; your exact numbers will vary, which is exactly why the logging section matters.

• 90 mm wood coaster, full-coverage design, 0.1 mm spacing at 250 mm/s: 6 to 8 minutes.
• Same coaster, outline-only monogram: 15 to 30 seconds.
• 100 mm slate coaster, photo, 0.1 mm at 250 mm/s: 10 to 14 minutes.
• 8x10 inch (200 x 250 mm) photo on wood, 0.1 mm at 300 mm/s: 45 to 60 minutes.
• 60 x 35 mm leather patch, logo, 0.08 mm at 300 mm/s: 1 to 2 minutes.
• Anodized aluminum tag, text only: under 30 seconds.
• 20 oz tumbler with a rotary attachment, 70 mm tall wrap-around art, 0.1 mm spacing: 10 to 15 minutes plus rotary setup time of 5 to 10 minutes the first piece.
• 24-coaster batch: about 2.5 to 3.5 hours of machine time, including focusing, material swaps, and two or three test burns.

Notice the pattern in that tumbler line: setup time is invisible in the job estimate but dominates small batches. The first tumbler costs you 20 minutes all-in; the fourth costs 12. Batch economics live in the overheads, not the beam time, and that is what the next section is about.

Batch planning for weekend markets

When you are producing for a Saturday market, plan in machine-hours, not pieces. List every product with its per-piece time from your log, multiply by quantity, add 10 percent for test burns and do-overs, and you get the real session length. Twenty coasters with logos at 7 minutes each is about 2.5 hours; the same twenty as full-coverage designs doubles it.

Group jobs by material so you focus and frame once per material, not once per piece. Focusing, cleaning the lens check, and positioning jig, a simple holder that keeps every blank in the same spot, take 3 to 5 minutes each time you switch material types, and those minutes are half your day if you interleave wood, slate, and glass.

One safety rule that overrides all scheduling: never leave a running laser unattended to "save the evening," especially overnight. Wood and slate dust can flare, and a stalled head scorches a job into a fire risk in under a minute. Production planning is about honest capacity, not heroic all-nighters. If the queue will not fit before Saturday, cut a product line, not the safety margin.

Settings that shrink job time safely

The biggest lever is line spacing. Simple graphics and text look essentially identical at 0.15 to 0.2 mm as they do at 0.1 mm, and widening spacing from 0.1 to 0.15 mm cuts engraving time by about a third. Reserve 0.05 to 0.08 mm spacing for photographs and fine detail, and drop to coarser settings everywhere else.

Second, match speed and power in that order. Engraving speed should be the fastest speed that still produces your full-contrast mark; power then gets trimmed to avoid scorching. Every material has a ceiling, and the way to find yours is a test grid, a small square of boxes burned at different speed and power combinations, from which you pick the fastest cell that still looks good. Ten minutes of testing routinely saves hours across a batch.

Third, enable bidirectional raster if your software offers it. Normally the head scans left to right and returns empty; bidirectional mode fires the beam on the return pass too, nearly halving travel time, with a small risk of visible seams on some machines if the offsets are not calibrated. Test it on scrap before trusting it on customer work. Finally, skip excessive passes: on wood, one pass at the right settings usually beats two passes at half settings, which doubles your time and heat for little quality gain.

How to log your jobs and price your hour

What you need

• A spreadsheet with one row per job
• A kitchen timer or your machine's job timer readout
• Ten representative jobs from your current product line

1. Build the log columns. Date, product, material, design coverage (full or outline), line spacing, speed, power, passes, and two time columns: beam time from the machine and total hands-on time from your timer.

1. Time the next ten jobs honestly. Include focusing, cleaning, positioning, and the inevitable rerun. The gap between beam time and total time is your real overhead, and for small items it is often 50 percent.

1. Calculate minutes per product. Average the total time for each product line and write the number where you can see it while quoting. A coaster that "feels like five minutes" is often eleven once you count everything.

1. Add setup overhead for batches. For each new material or fixture change in a batch, add 5 minutes. For a new one-off design, add 20 to 30 minutes for test burns and framing. This is the step that makes your quotes survive contact with reality.

1. Price the hour, then the piece. Pick an hourly rate that reflects your market, commonly 25 to 40 dollars for small-shop engraving, multiply by your logged minutes, add material cost, then add your margin. If the resulting price is unsellable, the fix is a coarser line spacing or a simpler design, not a thinner margin.

1. Publish lead times from the log. When a customer asks how long their 50-patch order takes, your spreadsheet, not optimism, answers. Under-promise against your own data by 20 percent and you will stop apologizing for delays.

Job time feeds directly into what a machine earns per hour, and the CO2 laser cutter guide at the HFLaser industrial laser cutter range covers how tube power and machine class change those economics when you are ready to scale up.

FAQ / Common questions

How long does it take to engrave a coaster?

On a 60W CO2 machine, a 90 mm coaster with a full-coverage design at 0.1 mm line spacing and 250 mm/s takes about 6 to 8 minutes. An outline-only monogram on the same coaster takes 15 to 30 seconds, and widening the spacing to 0.2 mm roughly halves the full-design time with little visible loss on simple art. Add focusing, positioning, and cleanup, and count on around 10 minutes of hands-on time per coaster in practice.

Why does laser engraving take so long?

Filled-area engraving is a raster process: the beam fills the design line by line like an inkjet, so total travel is the number of rows times the row width. A 90 mm design at 0.1 mm spacing is 900 rows, about 81 meters of beam travel, and the head also slows at each row's end. Fine spacing, big areas, and multiple passes multiply all of it, which is why photos take an hour while a text-only logo takes seconds.

How do you speed up laser engraving?

Increase line spacing first: going from 0.1 mm to 0.15 mm cuts about a third of the time with no visible change on simple graphics. Then raise speed until the mark loses contrast and back off, using a test grid to find each material's fastest good-looking setting. Enable bidirectional raster if your software supports it, avoid unnecessary second passes, and reserve fine spacing for photographs and detailed artwork only.