Martin Hind wrote:
We're repairing sash windows throughout our Victorian terrace and need
to
replace cills on at least three windows, at present have two windows
removed and hopefully will start on third at weekend.

I find it useful to be able to cover up quickly when the rain starts. If
you reverse the sashes and just pin them in place you can work on the
outside bits from the inside, and at a comfortable height.

I'll also need to replace some of the inner and outer box linings but
this doesn' strike me as the tricky part.

Tricky in the sense that you shouldn't reduce the interior dimensions of
the channel. I've seen "refurbishments" where the weights can't pass
each other easily and are forever jamming.

Having never had to replace cills before turning process over in my
mind
and a couple of things crop up:

[1] A band saw might make light work of making joints in new cills.
Saw
would need to be portable, so table-top type, as no workshop here and
equipment stored in the basement. Was thinking of Axminster AWSBS2:

http://www.axminster.co.uk/product-Axminster-AWSBS2-
Bandsaw-462917.htm

Comments appreciated.

In a refurbishment all the sill has to do is sit there. It doesn't
really need to be jointed because the box doesn't have to be a free
standing item

[2] As to machining joints in new cills, it occurs that it might be
easier to rout housing joint in cill for stiles before profiling the
cill. If this is true then rather than getting local timber yard to
supply cill ready profiled I'd need to do profiling myself last. So
how to
go about this? Would I manage with circular saw or is more machinery
needed here?

Again all comments much appreciated.

TIA

Martin