SDS Drill Bits:Today's Stupid Q

[charliegolf]

Can I use my old B&D hammer drill with an SDS bit; and get a tangible improvement in results? Or does an SDS drill do something magic?

Thanks

CG

 

[rsgaz]

Can I use my old B&D hammer drill with an SDS bit

Not well, no. A 3 jaw chuck can't grip it properly. The chuck will loosen in use. If you line up one of the grooves on the shank with one of the jaws, it will hold it better, but now the bit is off centre and wobbles.

Or does an SDS drill do something magic?

It hits the back of the bit with a weight to provide the impact blow. See the cutaway at 0:37

 

[charliegolf]

Thanks for that rsgaz, as I pressed send, I think that dawned on me!