The Complete Glowforge Guide for New Owners

Glowforge makes laser engraving approachable — but “approachable” isn’t the same as “automatic”. This guide covers the things the built-in tutorials skim over: how to get repeatable photo engraves, when to ignore Proofgrade settings, and how to keep your machine running cleanly through a busy season.

1. Understand the three operations

• Cut — laser at full power, slow speed, single pass. The beam goes through the material.
• Score — single vector line at lower power. Used for outlines, fold lines, and detail.
• Engrave — raster pass that scans back and forth, lifting power based on the image. This is where photos and logos happen.

Most customer projects combine all three. Decide before you import which lines are which, because the Glowforge app uses stroke colour to assign operations.

2. Focus is everything

Glowforge auto-measures material height with the red dot — usually accurate, occasionally not. If a cut isn’t making it through, or an engrave looks soft, set Manual focus and measure the actual material thickness with calipers. For curved or warped wood, push the centre flat with magnets or use the metal honeycomb pins.

3. When to use Proofgrade and when not to

Proofgrade settings are conservative on purpose. They’re tuned for a brand-new lens, a clean bed, and average humidity. Once your machine has a few hundred hours on it, you’ll need to bump power 5–15% to match those original results. For non-Proofgrade materials (anything you bought yourself), always test on a corner before committing to a full sheet.

4. The masking-tape trick

Cover your material with low-tack masking tape (or Glowforge’s own masking paper) before engraving wood, leather, or acrylic. The tape catches smoke residue and burn discolouration. After the job, peel it off and you’re left with crisp, clean engraves — no scrubbing. This single habit triples the perceived quality of your work.

5. Photo engraving settings that actually work

The Glowforge app’s default photo engrave is fine for snapshots. For paid work, click into Manual and try:

• Wood (Proofgrade maple, birch ply): 1000 speed / 80 power / 270 LPI / convert to dots / Jarvis dither
• Leather (vegetable tanned): 1000 speed / 35 power / 270 LPI / vary power on
• Slate coasters: 800 speed / 100 power / 195 LPI / vary power off
• Anodised aluminium: 1000 speed / 100 power / 340 LPI / vary power off

Always test on a 25×25 mm corner before the full piece. Settings drift with lens cleanliness.

6. Prepare your photo before the Glowforge app sees it

The Glowforge app does the absolute minimum image processing. If you upload a raw phone photo of a customer’s dog, the result will be flat and grey. Before uploading:

1. Remove the background (the dog should be on white, not the carpet).
2. Lift the midtones — the laser engraves shadows as “burned” and highlights as “untouched”, so weak midtones become weak engraves.
3. Dither the image yourself before upload — the Glowforge app’s built-in dither is okay, but a Jarvis or Stucki dither done outside the app gives you finer control.

7. Honeycomb tray vs. crumb tray

The stock honeycomb is fine for cutting, but for engraving small items the cells can create faint hex shadows underneath thin materials. Lay a piece of scrap cardboard under thin veneer or paper to break up the pattern, or invest in a flat magnetic bed for repeat small-item work.

8. Keep the lens, mirrors, and windows clean

Smoke is the enemy. Once a week if you’re running heavy, clean:

• The printer head lens (lift it out, wipe with a microfibre and a drop of isopropyl).
• The two mirrors visible inside the gantry.
• The glass window where the laser exits the tube.

A 5% drop in laser power from dirt feels like “suddenly my settings stopped working”. It’s almost always the lens.

9. Air assist and ventilation

Even with the stock compressor, a long engrave session in a poorly ventilated room will haze your lens within a week. If you can, vent outdoors with the shortest possible duct run, and add an inline booster fan for runs over 12 m. A clean machine cuts faster, engraves darker, and lasts longer.

10. Workflow for repeat orders

If you sell on Etsy or take repeat work, build a per-product template:

• Save the dialled-in settings as a named manual setting.
• Keep a master SVG with the cut shape, score lines, and a placeholder for the engrave.
• Drop the customer’s photo into the placeholder layer in your design tool and re-upload.

This reduces a 15-minute setup to a 90-second one.

Common Glowforge problems and quick fixes

• “Cooling” pause too long — room is too warm. Below 24°C is ideal.
• Cuts not going through — clean the lens, check focus, verify material thickness with calipers.
• Engrave too light on one side of the bed — mirror alignment is off; contact support before forcing power up.
• Yellow scorch on light wood — mask with tape before engraving, or wipe with a damp cloth after.

Need a clean photo-to-engraving file before you even open the Glowforge app? EngraveIQ’s converter handles background removal, midtone lift, and dithering in one step — export and upload directly.