Blue Boar dry cutting Diamond Core Bit cutting cinder block (no rebar)
using a 7” angle grinder. The hole is started with a centering bit and
rubber stabilizing square. Once the hole is started, the centering bit
is removed, and the hole is continued using the dry cutting diamond
core bit. This dry cutting diamond core bit does not cut through
concrete, materials with rebar, or brick.
![](https://i.ytimg.com/vi/FS_qn9L9bak/mqdefault.jpg)