Posted by Jeffrey Robertsonalmost 4 years ago
Core Hole Drilling
Need to core a hole vertically in to a concrete wall and extract/retrieve the core. What is the suggested method? Core depth up to 700mm
1 Reply
Posted by Team Ask Hiltialmost 4 years ago
Thank you for your question Jeffrey,
For smaller bore hole diameters up till 35 mm there are special tools for this purpose, DD-CB Core Breaker in different sizes. See link: DD-CB core breaker - Accessories for Diamond Core Bits - Hilti United Kingdom . For bigger diameters it is actually quite easy to crack the concrete cylinder by breaking with a screwdriver or similar. To remove it you can for an example install a concrete screw (HUS4) to grab on to something and then lift it up.