This customer purchased a 50W Fiber Laser Engraving Machine from us in April 2023 for $5000. In 2024, he reported that his machine was producing unwanted lines on engravings. At his request, we replaced the galvo scanner and control board. When this did not resolve the issue, we went beyond our warranty obligations and replaced his one-year-old 50W machine with a brand-new 60W model at no cost to him.
Later, customer informed us that he had discovered the actual cause of the unwanted lines: his unstable work table, which caused the galvo mirrors to shake whenever the table moved. In other words, the equipment was not at fault, yet the customer received a free upgrade to a more powerful and more expensive machine.
In 2025, the customer contacted us again about an engraving issue. This time, he noticed a grid pattern that appeared only when engraving at an angle using particular parameters. When the exact engraving was performed vertically or horizontally (0° or 90°), the results were clean and flawless. To ensure his satisfaction, we replaced all the major components of his machine, including the laser source, control board, galvo scanner, and power supplies — again at no cost, even though his warranty had expired.
We also ran tests using the exact parameters the customer provided and were able to produce clean, angled engravings on his machine by slightly increasing the speed. This demonstrated once again that the issue was not with the equipment itself but with the engraving settings.
Every laser machine operation is unique, and numerous factors, including lens calibration, beam alignment, and operating parameters, affect the engraving results. It is the operator’s responsibility to identify and use the correct settings for their application.
Given the extensive support and multiple no-cost replacements we have already provided, it is clear that we have gone well beyond our obligations. The customer's request to buy back his used machine is also unreasonable, especially considering the significant upgrades and component replacements we carried out entirely at our own expense. Furthermore, his machine continues to function correctly when operated with the correct parameters.