Diameter, depth, perpendicularity and cleanliness are part of the fixing system. Mark required depth on the bit.
Method basis: Rigips/Knauf system guidance and Fischer/Hilti fixing-selection principles. Final parameters always come from the selected product data.
How to plan the installation
Match hammer mode to the base and clean the hole using the prescribed brush, pump or extraction method.
Common mistake
Do not repair a loose hole with random filler or continue with a worn, oversized bit.
Pre-start check
- Was the structural base identified rather than only the finish?
- Does the weight include contents and projection?
- Were services, edges and minimum spacing checked?
- Does the product data permit the base, direction and environment?