Air engraving pens — micro die grinders — are used where a full-size grinder is too heavy: sign layout, jewellery work, mould texturing and fine deburring. Two-bearing bodies suit general engraving and polishing; three-bearing bodies hold runout tighter for continuous production duty. Kits ship with burrs, hose and case.
Two-Bearing Engraving Pens
Three-Bearing Engraving Pens
How to choose
- Bearing count — two-bearing for intermittent detail work, three-bearing for long production runs where runout matters.
- Kits vs bare tool — kits include burr assortment, hose and a moulded case, which is what most first-time buyers need.
- Hose connection — check the inlet thread against your existing couplings to avoid an adapter on day one.
- Air supply — micro pens need clean, dry, lubricated air; an inline filter-regulator-lubricator pays for itself here.
Typical applications
- Sign and plate engraving
- Jewellery and craft detailing
- Fine mould texturing
- Precision deburring
- Glass and ceramic etching
Ordering
- MOQ — quoted per model, mixed-SKU container loads accepted.
- OEM / ODM — private-label bodies, colour and packaging available.
- Samples — dispatched in 3–5 working days for stocked models.
- Specification — exact figures confirmed on the drawing / TDS before production.