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ABS & PBT Keycaps

2025-05-16

Key Information

Laser Machines
Aurora Fiber 100W
Material Needed
PBT & Coated ABS Keycaps
Project File Download
Settings
Coated ABS Keycap Laser Marking
Speed: 100mm/s
Power: 20%
Frequency: 50kHz
Line Interval: 0.08
Bi-directional: On
Number of Passes: 1 Pass
Settings
PBT Keycap Laser Marking
Speed: 1000mm/s
Power: 20%
Frequency: 50kHz
Line Interval: 0.08
Bi-directional: Off
Number of Passes: 2 Passes

Introduction

Laser marking ABS keycaps and PBT keycaps is a clean way to create custom keyboard legends, icons, logos, and decorative patterns.


With the right fiber laser marking machine, coated ABS keycaps can reveal crisp shine-through legends for backlit keyboards, while PBT keycaps can produce bold, opaque marks with a durable custom look. Whether you are building a gaming keyboard, upgrading a work setup, or creating custom mechanical keyboard accessories, laser-marked keycaps add personality to every keystroke.


In this tutorial, you will learn how to position ABS and PBT keycaps, import the keycap laser marking file, set the correct focus, frame the design, and complete personalized keycaps with Aurora Fiber.

Before your work begins

Make sure the laser marking machine is connected and operating normally
Remove the lens cover before marking
Keep the coated ABS keycaps and PBT keycaps clean, level, and stable on the laser bed
Test the ABS keycap laser marking settings and PBT keycap laser marking settings before processing the final keycaps

Operational Process

STEP01

Prepare & Position the Keycaps

Choose the coated ABS keycaps or PBT keycaps you want to customize and place them on the laser bed.


Make sure each keycap is clean, stable, and positioned with the marking surface facing upward. Stable placement helps keep the ABS keycap or PBT keycap legend sharp and prevents the design from shifting during laser marking.

keycaps for laser marking
STEP02

Import & Adjust the Marking File

Load your keycap design into LightBurn software, then adjust the size and position to fit the ABS or PBT keycap surface. You can create keyboard letters, icons, symbols, shortcut labels, brand marks, or decorative designs for custom keycaps.


ABS keycaps and PBT keycaps use different laser marking settings, so check the correct parameter group before starting. Coated ABS keycaps are often used for shine-through keyboard legends, while PBT keycaps usually create stronger opaque marks. Correct settings help create clear legends and consistent laser-marked keycaps.

laser marking PBT keycap settings
laser marking coated ABS keycap settings
STEP03

Set the Correct Laser Focus

Missing the focus is one of the biggest reasons for poor keycap laser marking or laser engraving results. Make sure the ABS keycap or PBT keycap surface is properly focused before processing.


You can use auto focus or manual focus. When two red dots are visible on the keycap surface, it is out of focus. When the two light dots overlap each other, the surface is in focus and ready for laser marking.

Auto focus
Manual focus
STEP04

Frame the Design & Start Laser Marking

Press the frame button and check whether the red light indicates the correct marking area. The frame should stay inside the top surface of the ABS or PBT keycap, with the legend, icon, or custom design centered properly.


If the frame is not aligned, adjust the design position until it fits correctly. After checking, close the laser door and begin the Aurora Fiber laser marking process. Stay nearby while the laser machine marks the custom keycap design.

the aurora lite is well connected and ready to work
laser marking PBT keycap
STEP05

Post Processing

Stay near the machine during operation and monitor for unusual sounds or alarms. Avoid looking directly at the laser beam for too long, even when protective measures are in place.


Once laser marking is complete, carefully open the door and remove the personalized ABS and PBT keycaps. Clean them gently if needed, then check whether the legends, icons, and custom marks are clear and consistent. Install the finished laser-marked keycaps on your keyboard and enjoy the custom look.

laser marking coated ABS keycap
laser marking keycaps done

Come and Try!

Laser-marked ABS and PBT keycaps can turn a standard keyboard into a more personal and professional setup. ABS keycaps are ideal for crisp shine-through legends, while PBT keycaps offer a clean, durable look for custom keyboard designs, gaming setups, work keyboards, and branded keycap projects.


If you want to laser mark keycaps, laser engrave keycaps, or produce personalized ABS and PBT keycaps, choosing the right keycap laser marking machine matters. Explore Thunder Laser machines or contact Thunder Laser to find the best keycap engraving machine and fiber laser marking solution for your keyboard customization projects.

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