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Farm Machinery
Competition Ploughing
Counter sunk disc bolts
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<blockquote data-quote="Howard150" data-source="post: 4800194" data-attributes="member: 30002"><p>Getting technical now Kevin. If you do sharpen a masonry bit you can always check it on a piece of scrap - similarly once the angle is right you can always check the depth by inserting a bolt. </p><p>I have some 21mm carbide countersink both 3 and 5 flute but they were £120 apiece.</p><p>Look online for HMT Or Hole Maker Technology. They can be found at any really good plant hire firms as well. They make countersinks and broaches in HSS which we have had really good results on site and they are reasonably priced.</p></blockquote><p></p>
[QUOTE="Howard150, post: 4800194, member: 30002"] Getting technical now Kevin. If you do sharpen a masonry bit you can always check it on a piece of scrap - similarly once the angle is right you can always check the depth by inserting a bolt. I have some 21mm carbide countersink both 3 and 5 flute but they were £120 apiece. Look online for HMT Or Hole Maker Technology. They can be found at any really good plant hire firms as well. They make countersinks and broaches in HSS which we have had really good results on site and they are reasonably priced. [/QUOTE]
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Farm Machinery
Competition Ploughing
Counter sunk disc bolts
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