pilotborrning
Pilotborrning is a construction technique used to create a small initial hole, or pilot hole, before performing a larger drilling operation. This pilot hole serves as a guide for the main drill bit, ensuring accuracy and preventing deviation, especially in challenging ground conditions or when drilling through multiple layers. The diameter of the pilot hole is significantly smaller than the final desired diameter of the main bore.
The primary purpose of pilotborrning is to improve the precision of the subsequent larger drilling process.
Pilotborrning is also beneficial in situations where the material being drilled is inconsistent or contains obstacles.