suitable meachine for making cutouts hollowcoreslab

[sabapathy1]

HI
anybody can suggest the suitable meachines for making cutouts and box opening in hollow core slabs

 

[unclesyd]

I am assuming that you are referring to a hollow core where you don't want any water. If so there any number of manufacturers of dry coring bits like the ones at tool fetch

http://www.toolfetch.com/dry-concrete-core-bits.shtml