"David Lang" wrote:

How do you
reckon we managed in the dark ages before SDS?

Very slowly.................

LOL! Yeah, that's true but the holes are more even. I've used SDS
drills but found they tend to bulldoze through rather than drill
accurately. Especially in brickwork. I prefer a big old "pro"
hammer drill bought for 6 quid at a car boot sale, came with a
box of proper masonry bits. Used it to damp-proof my last house
(injection method) and it refused to burn out.

riccip