Glossary · Accessories
Rotary axis (laser)
An add-on device that rotates round objects such as mugs, bottles or pens under the laser. This lets you engrave all the way round.
Explained in more detail
The rotary axis usually replaces the laser's Y axis: instead of the head moving back and forth, the workpiece rotates. Roller rotaries support the part on two driven rollers and suit evenly round mugs and bottles. Chuck rotaries clamp the part like a lathe and also cope with tapered or irregular shapes such as wine glasses and rings. In the software you enter the diameter of the workpiece or the steps per revolution, otherwise the design is squashed or stretched. With galvo lasers, the axis usually works in steps, section by section.
Where does the term come from?
Rotation comes from Latin rotare, to turn. In English the accessory is called a rotary, which is why software and shops often say "Rotary".
In practice
- The workpiece must lie level, otherwise the focus drifts along the engraving. Shim conical mugs if necessary.
- Measure the diameter at the point where the engraving is done, not at the widest point of the object.
- With roller axes, a mug with a handle or a smooth base can slip. Rubber rings or weights help.
- Do a frame run before the actual job to check whether the design fits within the visible area.
Not to be confused
Not to be confused with the rotary attachment in UV printing. Both rotate round parts, but the laser burns or marks, whereas the UV printer applies ink.
Frequently asked questions
Which rotary axis do I need for mugs?
For straight, cylindrical mugs a roller axis is enough. For stemmed glasses, conical shapes or rings, a chuck axis is better suited.
Why is my engraving on the mug distorted?
Usually the set diameter is wrong or the mug is sitting crooked. Measure the diameter at the engraving spot and align the part horizontally.