We are a company based in Midvaal but we can supply you with a service no matter where you are in South Africa
Business Hours
Monday to Friday
8 am to 5 pm
Saturday
8 am to 13 pm
Sundays
Closed

Laser Engraving • Digital Tools • Education
Learn. Test. Create. Sell.
MOPA Laser Engraving Guide | Understand Pulse Width, Frequency & Settings
Stop guessing what ns and kHz do. Learn how pulse width and frequency affect your engraving, and how to test settings for your machine and material.
The RTC Laser Masterclass explains the principles in beginner-friendly language, with practical examples for users who have just bought a laser or want more consistent results.
This book is a beginner guide for aser and fiber laser users, with calibration tips for xtool f2 ultra, metal marking, deep engraving, coin engraving, test grids, and common engraving problems.
WHAT’S INSIDE
• Pulse width, frequency, pulse energy and overlap explained
• Heat control, surface finish, colour marking and engraving depth
• Material guidance for stainless steel, brass, plated coins, aluminium and tool steel
• Calibration grids, troubleshooting and printable workshop records
• Real RTC workshop photos, recorded settings and lessons from coins, axes, knives, rings, cards and eartags
• Optional formulas with plain-language explanations and worked examples
YOUR DOWNLOAD INCLUDES
• RTC Laser Masterclass Volume 1
• Separate Start Here PDF
• Separate Book Overview PDF
Created under Charles Waller’s direction, with his workshop photographs, practical settings and observations.
Build your understanding, test with purpose and keep a record of what works.
Digital download only. No physical book or laser machine is supplied. Settings are reference starting points; results vary with equipment, material and setup.
Rellaw Trading Co is a family-owned South African business specialising in laser engraving education, digital tools and practical workflow systems.
Our resources are built around real-world laser engraving experience, helping beginners, makers and small businesses learn their machines, develop repeatable workflows and create products they can confidently sell.
RTC
Heritage Engraving
About Rellaw Trading Co
We are a small, family-owned South African business built around a passion for precision, creativity and practical solutions.
Our journey began with a love of laser engraving and precision craftsmanship, creating personalised products and exploring what modern laser technology can achieve across different materials and applications.
As our experience grew, so did our interest in helping other laser users get better results from their machines.
Today, Rellaw Trading Co focuses on laser engraving education, digital tools, workflow systems and practical resources designed for beginners, hobbyists, makers, side-hustles and small laser businesses.
Our digital guides and systems are built around a simple philosophy:
Learn → Test → Adjust → Record → Repeat
Rather than chasing one-size-fits-all settings, we believe laser users should understand their machines, test their materials and develop workflows that produce repeatable results.
Our resources cover areas including laser settings, calibration, engraving workflows, troubleshooting, coin engraving, UV glass and crystal engraving, and laser business opportunities.
We believe good results come from a combination of knowledge, testing and experience.
As a family business, we take pride in providing practical resources, honest information and helpful customer service. Every product we develop is created with the aim of making laser engraving easier to understand, easier to test and easier to turn into something you're proud of.
Rellaw Trading Co
Precision. Practical Knowledge. Real-World Results.
Learn. Create. Engrave.
We are a company based in Midvaal but we can supply you with a service no matter where you are in South Africa
Business Hours
Monday to Friday
8 am to 5 pm
Saturday
8 am to 13 pm
Sundays
Closed