Electric hammer drills work for light or occasional work in soft to medium rock, but they can't match the speed, durability, or cost-per-hole of a pneumatic system for repeated commercial use. For professional fence installation or any application in hard rock, a pneumatic drifter is the right tool.

Most handheld drifters require 100–200 CFM at 90–100 PSI. A trailer-mounted diesel compressor in the 185 CFM range is the standard field solution. Always check the tool's air consumption spec before sizing your compressor.

For hard rock, use a carbide button bit (45–64 mm) matched to your rod thread — Madido's R25 spike or ballistic button bits are the most common choice. For soft to medium ground, a cross or blade bit is more economical and still provides excellent performance.

Start with a short 0.6 m or 0.9 m starter rod and couple on extension rods as depth increases. This lets you begin drilling where a full-length rod simply won't fit. Madido stocks short starter rods specifically for this application.

Yes — thread mismatch is a leading cause of rod and bit failure in the field. Both the rod-to-tool and rod-to-bit connections must be compatible. If you're unsure, contact Madido's technical team and we'll confirm the correct thread spec for your existing equipment.

Bit life depends heavily on ground hardness. In soft limestone, a quality button bit may last several hundred meters. In abrasive granite, the same bit may last 20–50 meters. Using water flush where possible and regrinding buttons before they fully wear will significantly extend bit life. Madido also offers a reforging service for worn bits.