For impressive internal engravings in crystal balls, precise laser focusing is essential. The xTool Internal Engraving Oil was specially developed to compensate for the optical effects caused by the spherical surface during engraving. It is suitable for internal engraving of K9 crystal balls with the xTool F2 Ultra UV and is perfectly matched to the corresponding internal engraving fixture.
For Precise Internal Engravings in Crystal Balls
Due to their curved surface, crystal balls cannot be easily engraved on the inside. The spherical shape acts like an optical lens for the laser, altering the beam path and the position of the focal point.
The Internal Engraving Oil creates a flat surface above the crystal ball. To do this, the crystal ball is completely immersed in the oil. The liquid has optical properties suitable for this application and therefore supports more consistent focusing of the UV laser.
For the application, the crystal ball should be completely covered with oil, with the oil level maintained approximately 2 mm (0.08 in) above the surface of the ball. This allows internal engraving with the xTool F2 Ultra UV to be carried out under the intended conditions.
Important: To prepare the crystal ball properly for engraving, the xTool Internal Engraving Fixture is required.
Reusable Multiple Times
The Internal Engraving Oil can be reused after application. If it becomes cloudy through repeated use, it should be replaced, as a clear liquid is important for optimal engraving results. According to the manufacturer, the oil can be cleaned with water and dishwashing liquid after use; however, no water should come into contact with the oil during the engraving process.
According to the manufacturer, the oil can be safely disposed of down the drain. xTool also recommends wearing rubber gloves when handling the oil.
Benefits at a Glance
- Specially developed for internal engraving of K9 crystal balls
- Suitable for use with the xTool F2 Ultra UV
- Supports consistent laser focusing
- Completely surrounds the crystal ball during engraving
- Recommended oil level of approximately 2 mm (0.08 in) above the ball
- Reusable multiple times
- Environmentally friendly formula
- Capacity: 500 ml
- Suitable for: K9 crystal balls
- Compatible machine: xTool F2 Ultra UV
- Application: Internal engraving
- Usage: In conjunction with the xTool Internal Engraving Fixture
- Reusable: Yes
- Disposal: According to the manufacturer, disposal down the drain is possible

The Makeblock success story began in 2012 when Jasen Wang, the founder and CEO, had a groundbreaking idea. As a passionate maker, Jasen realised how difficult it can be to turn a creative idea into reality. This drive gave rise to his first project: Makeblock.
Makeblock specialises in promoting STEAM education. The company helps young students develop their creativity by developing educational infrastructure - including robotics modules, coding software and laser cutters. The aim is to give pupils the tools to learn technical knowledge and creative skills through play.
At the end of 2020, Makeblock expanded its portfolio and entered the field of laser machines. With the xTool project, the product range was expanded so that not only students but also adults can benefit from the solutions. Creativity is not just about developing programming robots - it is also about personalising everyday objects, such as engraving names on mugs or creating works of art from wood.
With the launch of the first product, the xTool D1 in 2021, Jasen started a new chapter in his vision. While the Makeblock success story continues, xTool marks the start of an exciting new episode.
Contact:
MAKEBLOCK (HONG KONG) COMPANY LIMITED
19H Maxgrand plaza No.3 Tai Yau Street
San Po Kong, Kowloon, Hong Kong
European subsidiary
Makeblock Europe BV
Oostergracht 48, 3763 LZ Soest, Niederlande
Phone: +31 6 1264 5740
EMail: eu@makeblock.com
Register entries:
Registered with the Dutch Chamber of Commerce (KvK): 68916752
VAT no.: NL857646655B01