AM ARROWMAX Mini Engraving Pen
Top PickWhat We Like
- Forward and reverse rotation
- Four speeds from 15,000 to 30,000 rpm
- OLED shows speed and battery
- 30 diamond bits included
Worth Noting
- Battery life drops at top speed
- Battery
- 500mAh LiPo, up to 2 hours
- Rotation
- Forward and reverse
- Speed Range
- 15,000–30,000 rpm
- Bits Included
- 30 diamond bits
The forward/reverse switch is the first thing we show people, because it changes who can use this pen comfortably. Left-handed engravers usually fight the rotation of a rotary bit; the AM ARROWMAX lets you flip direction with a click. That, plus four speeds from 15,000 to 30,000 rpm, makes it the most adjustable cordless pen in this group and our default recommendation.
The 30,000 rpm ceiling is not just a number for the box. It gives you headroom for hard wood and soft metal, while the lower settings let you slow down for plastic and glass. We also like the OLED screen: it shows speed, battery, and direction at a glance, so you are not guessing mid-line. The 30 diamond bits cover everything from fine detail to broader marks.
In the hand it feels like a pen, not a rotary tool. The compact body and light weight make it easy to follow curves and lettering, and the bit changes are straightforward once you learn the collet. The kit is generous enough to start without buying extras.
The limit is torque. On hardened steel this is a patient, light-pass tool, not a gouger; if you need deep workshop marks, a corded impact engraver is faster. That does not stop it from being the best all-around pick for detail work, but it is the reason to look at the Dremel or YEYETUO for heavy metal.
Bottom line: We recommend the AM ARROWMAX as the default cordless engraving pen: its speed range, reversible motor, and 30-bit kit make detailed work easier, and it stays comfortable in the hand.