Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
3 Answers
- dtstellwagenLv 77 years ago
Drills or saws with special carbides are generally needed, for small cuts you can use a demolition saw http://www.amazon.com/gp/product/B003K4FQ6G/ref=as... or a core drilling machine (like a big heavy duty hole saw) http://www.amazon.com/gp/product/B004UB1YGY/ref=as... , you can remove large pieces by stitching holes in a line to make the general shape you need.
But if you need a serious piece of concrete out you are best off calling a concrete cutting and coring contractor.
