Ian Stirling wrote:
Simply taking any masonry bit, and leaning on it with the drill on
hammer action, with the chuck fastened, with more or less any drill,
going round the right way will work.

before I got the SDS I was getting through 6mm bits pretty quickly -
bought a B+D "pyranha" (IIRC) bit which was quicker and lasted much
better - still got it but it's getting a bit blunt now.

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