In article ,
Capitol wrote:
You can drill into many types of 'masonry' with an ordinary HSS twist
drill - which may also be easily sharpened afterwards with a modicum
of skill.


Anyone who advocates this, IMO, comes under the heading of an
incompetent.

Really?

The HSS drill can be resharpened, but will never drill a
hole to the original specified diameter again. It is an exceedingly
stupid practice!

You think a hole into soft masonry is critical in dimensions?

Some - probably not you - keep a comprehensive set of HSS drills for
important things well clear of those used for jobbing work. HSS jobbing
drills are so cheap that there's no reason not to. Unlike 'masonry' drills.

--
*If a pig loses its voice, is it disgruntled? *

Dave Plowman London SW
To e-mail, change noise into sound.