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To Show how I cut pockets in sliding sash windows
for those of you that's seen my blog
you know what the job is
for those that haven't
There's a chance for you to have a catch up the link's
somewhere
down there
we need a pocket in stiles so we can get the weights in
uh...
on first installation and
for any future
maintenance, re-cording,
whatever
so we've got a piece of wood in this stile
that comes out
and we can then
insert the weight through that
nothing complicated about
I might hear you say
we just cut
along there and
take a jigsaw down there and the piece will come out
But a very clever bit of design
old fashion design
we've got it with a "v" in
that end
and a Lap at that end so it just needs a screw to go in there
to hold it in
There you can see
we've got a "V"
and at the other end a lap
so that does
presents some problems with cutting it out can not just get
a saw
to go
straight through
to cut that "V" so we've got to cut halfway through
and because it stops
at this groove where the parting bead goes in
we can't just saw all the way through it
so we've got to devise another method
I have had some discussions on some forums about uh... different ways of doing this and most
efficient way to do this
it seems like
there's a few people who
use a tennon saw or dovetail saw
and just nibble
nibble at it
uh... I find it pretty tricky because you're not getting much of a stroke and it's stopping
up against
where parting bead goes in
there's other people
that have got all the fancy tools, who've got one of those (uncertain)
wizzy
things with a blade
That just ver wer ver, Like that
and yea fine if you got something like that but
if you're like me and not got too many of these fancy tools
er...
there is a better way
what I have seen references to is
what i think was
called
a pocket Chisel
I'll have to check, see if I can find a photo
essentially its a short
bladed
very thin
but wide chisel
so what i've done
I've got
uh... an old chisel
and I've ground
the end of it down
hopefully that's coming out?
ah.. That's it..
so I've ground the end of it down
so it's really thin
Ehh..
nice and smooth
and just down the depth I need it
to cut halfway through the uh... the stiles
Here's one other styles I've not cut yet
first thing to do is mark it out
it's going to be 200 up
from the bottom
then going to have
twenty mil
Lap on it
and then
working out from my spreadsheet
that handily
calculates out the dimensions of the weights
its a Lead weight, 45 mil square
it's going to be
four hundred thirty-eight mil long
I did an experiment earlier
to see
when he goes in at an angle
uh... how
small I can make the pocket
I've got about three hundred and ninety five for this one
with it marked out
we'll take the marks through to the other side
next bit is simple , nothing fancy about thix
I've got to cut dow
this groove
where the parting bead
is going to go
uh... going to be using a jigsaw for that so just to get the blade in
just make..
OOO.. lost me bit
just drilled a couple of holes in there
so I can get the Jigsaw
blade in and then
wizz down it both ways
just going slightly cross the line at this end because thats where the "v" is going to be
nothing particularly accurate here
it doesn't need to be accurate
it's all hidden under here anyway
so that's that
groove cut, all got to do now is to cut
the ends, and rembember
that's uh... a point
on that end and a lap on that end
so we're cutting through from both sides
first one, this one with an angle on it
and this where I'm use my
pocket
cutting modified chisel
now the bevel
on the
chisel
does force the chisel
to go in
curve
so Just marking out the
top first
thats the line where I'm cutting
but here we go, starting
at an angle
so that's nicely bedded in there
and see the end of the chisel going up in a bit
and a bit of rocking
sometimes helps on that
thats the first cut through
be nice if I had a wider chisel as well, so I could do it all in one
hopefully you can see that going in there
and then
on the other end
move it down so you can see it, starting with a slight angle
checking it for depth
that's that one
and that one
then we can flip it over, to do the other side
once again just mark it off
and...
get the angle
and
and I could feel that
when it got through
to meet the other side
and I felt that go as well
then the other side
I've actually got the bevel facing in
so.. mark it off
mark it off..
and slight angle to start with
and checking the depth as that's how far I've
ground it back anyway
the other cut..
and...
see, it's just moved because all thats holding that
was holding that
was that
bit of grain ....
across there
so how we have
pocket
that's cut
that fits
straight back flat, In There. Extra : Let me know is the transcript is worth it. Cheers