The chisel used to cut keyways is

Cape chisel

Flat chisel

Round nose chisel

Diamond point chisel

Filing

Hacksawing

Chipping

Grinding

No Cut

Single cut teeth

Double cut teeth

Wavy teeth

One end of the toothed portion to the other end

Centre of one pin hole to the centre of other pin hole

End to end of blade

End of one hole to the end of the other pin hole

The space is not enough to run the blade

The blade is costly

The new blade has sharp teeth

None of the above