"Phil L" wrote in message
.uk...
VisionSet wrote:
Is there anything I can do to improve the finish of set concrete. I
want a smooth finish and I have got that for most of the surface but
in a few places it is acceptable but could do with being smoother.
Concrete is still fresh so it is not as hard as it will be in the
hours and days to come. It's a window sill.

Strong sand & cement? - I'd use fine building sand rather than grit sand,
although I wouldn't bother with it yet as it will probably need facing up
once the box comes off.

We always used to use granno instead of concrete for sills, it's much
finer
and packs down better and leaves a better finish.


I used 20mm agregate for the bulk and finsihed with 4:1 grit and cement and
left the whole lot to go off together. But it's what I had for the job and
it was apparant that the the 2 mixes were pointless and as you say the key
factor is the finest sand you have. I'll probably leave it as it is, I was
hoping that I could wetordry the odd patch or some similar approach. I
think this is a skill as involved as plastering. The latter I'm pretty good
at but then there is more opportunity to get good at it. It's going to be
along time before my cement based skills are on par.

--
Mike W