Power tools for second-fix joinery that speed up boarding and trim work while maintaining consistent nail placement and long runtime. Contractors and joiners who need fewer battery swaps and minimal downtime will appreciate the practical benefits. Is the DEWALT DCN660N Second Fix Nailer the right choice for busy worksites?
⚡ At a Glance
- • Nailing Performance: Consistent placement with up to 4 nails per second
- • Best for: Professional carpenters, joiners and contractors working on boarding and trim
- • Not ideal for: Occasional DIY users who rarely require second-fix speed
An 18V XR Li‑Ion, 16 gauge, brushless second-fix nailer designed for high-volume boarding. Mechanical operation and selectable sequential or bump modes balance precision with production speed.
Extended run time – Thanks to brushless motor
Brushless 18V XR Li‑Ion architecture delivers greater electrical efficiency and reduced internal friction compared with brushed designs, as noted in the manufacturer description. The specification emphasises superior runtime in a compact package.
Longer periods between battery changes reduce interruptions on site, so fewer battery swaps are needed during a typical shift.
Lower running costs in cold conditions – With mechanical rather than gas operation
Mechanical operation removes the need for gas cartridges and their consumables, providing consistent performance at low temperatures according to the product description. The design relies on mechanical actuation rather than gas-driven firing.
No dependence on gas means predictable running costs and reliable nailing in colder weather, useful for early-morning or winter jobs.
Precision or speed on demand – With selectable sequential and bump modes
Sequential mode enables single-nail placement for accurate work, while bump mode allows continuous firing at production speeds of up to four nails per second. The dual-mode arrangement is stated explicitly by the manufacturer.
Precision mode helps with trim and finishing, while the rapid bump mode speeds boarding and cladding tasks, saving significant installation time.
✨ The 4 Key Reasons for DEWALT DCN660N Second Fix Nailer
- Brushless motor – Dramatically extended runtime, fewer battery swaps on site
- Compact, ergonomic design – Easier handling in tight spaces, reduced operator fatigue
- Mechanical operation – Consistent performance in low temperatures, lower running costs
- Sequential and bump modes – Up to four nails per second for faster boarding
📋 Technical Details at a Glance
- Category: Second-fix nailer
- Power: 18V XR Li‑Ion
- Gauge: 16Ga
- Motor: Brushless motor
- Battery: 1 x 5.0Ah battery included
❓ Frequently Asked Questions
Q: Does the kit include a battery?
A: Yes, the product listing specifies one 5.0Ah battery is included with the nailer.
Q: Is gas required for operation?
A: No, mechanical rather than gas operation is used, which avoids gas cartridges and lowers running costs.
Q: How fast can it fire nails?
A: Selectable sequential and bump modes allow precise single nailing or production firing at up to four nails per second.
🏆 Our Verdict
Best suited to professional carpenters, joiners and contractors who need fast, reliable second-fix performance. The combination of an 18V brushless system, mechanical operation and selectable firing modes delivers long runtime, consistent performance and production speed. While initial outlay may be noticeable, durability and lower running costs make it a practical long-term investment.
