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Farm Building and Infrastructure
Buildings & Infrastructure
Stone core drilling
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<blockquote data-quote="renewablejohn" data-source="post: 4235988" data-attributes="member: 1136"><p>Have 7 holes to drill through my wall to fit MHVR units each of 100 mm diameter. Any suggestions. Just to put the job in context the walls are 900 mm thick made of 3 walls 300 mm thick solid millstone grit or sandstone. To date burnt out 1 pedestal drill, shattered 2 extension shafts, put crow bar through my lip, taught the locals a new foreign blue language and still only 700 mm through the wall.</p><p>Drill bit is 106mm diamond core drill and have tried both water lubrication and compressed air.</p><p></p><p>Any suggestions apart from getting in a team of professionals.</p></blockquote><p></p>
[QUOTE="renewablejohn, post: 4235988, member: 1136"] Have 7 holes to drill through my wall to fit MHVR units each of 100 mm diameter. Any suggestions. Just to put the job in context the walls are 900 mm thick made of 3 walls 300 mm thick solid millstone grit or sandstone. To date burnt out 1 pedestal drill, shattered 2 extension shafts, put crow bar through my lip, taught the locals a new foreign blue language and still only 700 mm through the wall. Drill bit is 106mm diamond core drill and have tried both water lubrication and compressed air. Any suggestions apart from getting in a team of professionals. [/QUOTE]
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