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Cutting a hole for a cat flap in a glass door

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Nigel Wilson

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Mar 11, 2002, 10:20:00 AM3/11/02
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I need to fit a cat flap in to what I believe is a single glazed
non-toughened pane of glass in the bottom section of a door. Is it possible
to cut the hole without removing the panel from the door? What tool would I
use (can I hire it?). What are my chanced of success seeing as it will be my
first ever attempt to cut glass?

Thanks.

Nigel.


Tony Kershaw

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Mar 11, 2002, 11:02:04 AM3/11/02
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"Nigel Wilson" <ne...@rareambition.co.uk> wrote in message
news:qW3j8.25773$yc2.2...@news2-win.server.ntlworld.com...

Hi Nigel

Sorry to put a downer on this idea but I think you're heading for trouble.
I'm about to order some mirrors for the bathroom, one of which needs a hole
cut in it for a shaver socket. I called three glaziers before I found one
who said it was possible and even they have to "send it out" to get the hole
cut (and then they charge £60 extra).

Like you, I thought it would be fairly simple. Without going into the
technicalities of cutting glass (which were explained to me by the glaziers)
I am now convinced it's not.

This is why you always see cat flaps in a solid panel of plywood or
something like that. If anyone else in the group knows different let me
know, it could save me £60!

Tony


writer

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Mar 11, 2002, 11:24:42 AM3/11/02
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Obtain a copy of the Which DIY book. It explains it in there on how to cut
holes.
Not easy, but still possible.


"Nigel Wilson" <ne...@rareambition.co.uk> wrote in message
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Stuart

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Mar 11, 2002, 12:13:05 PM3/11/02
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Dont know if you can still gets uch things but I have seen a
thing for cutting holes in glass -it isbasically a central
pillar which has an adjustable arm which holds the cutter and
rotates round the central arm
Stuart
---------

Remove YOURPANTS before E-mailing Me

Nigel Wilson

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Mar 11, 2002, 1:13:30 PM3/11/02
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Yep, I've seen them on American sites. Didn't know if they worked well or on
glass already in position.

Nigel.

"Stuart" <stu...@shaws2000.fsnet.co.uk> wrote in message
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Peter Gray

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Mar 11, 2002, 4:47:52 PM3/11/02
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In article <qW3j8.25773$yc2.2...@news2-win.server.ntlworld.com>, Nigel
Wilson wrote:

I suspect it is possible, after all they did it all the time in '60s spy
movies! However, I doubt it's easy. Probably a lot easier to get a good glass
merchant to cut you a new piece with a hole, or take the old pane to them to
get it cut. I had an new panel, with a hole for a flap, made up for my back
door. It was about £70, but that was using laminated glass, which made it all a
lot more difficult and expensive.

Peter

Nigel Wilson

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Mar 11, 2002, 5:40:46 PM3/11/02
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Thanks for the advice. I suspected it might be hard. It's in a friends door
so that they can look after my cat for four months whilst I'm away on world
cup duties in Korea. I spoke to her tonight on the phone and she revealed
another piece of information. I was try to get her to work out if it was
toughened glass. She replied that it wasn't, it was just that criss-cross
stuff with the embedded wire mesh that you get in schools. Should be easy to
cut she said!

I've made a decision. Take the glass out and replace it with ply-wood. I
think that cutting a hole in wood will be a lot easier than putting one in
reenforced glass!

Nigel.


"Peter Gray" <pe...@petergray.homechoice.co.uk> wrote in message
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Neil

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Mar 12, 2002, 1:22:56 PM3/12/02
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I had the same problem a couple of years ago. I bought a glass cutter that
has a sucker on 1 end. The cutter at the other end is adjustable so you can
get the hole the right size. After scoring the hole once only you have to
'fill' the hole with more scores holding the cutter like a normal one. Then
with a lot of care and patience you tap all around the hole and in the
middle.

I think I bought the cutter from a local hardware supplier (Possibly a
Draper about £7).

Good Luck , you may need it!!!!!

"Peter Gray" <pe...@petergray.homechoice.co.uk> wrote in message
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Simon Bramley

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Mar 16, 2002, 11:22:38 AM3/16/02
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My local B&Q stock them as do axminster.co.uk (part no VIT918 - £7-48). I
have a lot of experience of cutting glass (making stained glass windows),
but I only managed to cut one successful hole in of 4 attempts (the previous
'spy' analogy was quite good, as the tension when you are tapping the circle
out is unbearable...). I found that it's much easier to cut a circular piece
than to make a circular hole, since you can break off the waste in several
bits, but that's not much use if what you need is a hole!

Simon.

"Neil" <neil....@btinternet.com> wrote in message
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Neil Evans

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Mar 16, 2002, 8:47:48 PM3/16/02
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"Nigel Wilson" <ne...@rareambition.co.uk> wrote in message
news:Fnaj8.28807$yc2.3...@news2-win.server.ntlworld.com...

> Thanks for the advice. I suspected it might be hard. It's in a friends
door
> so that they can look after my cat for four months whilst I'm away on
world
> cup duties in Korea. I spoke to her tonight on the phone and she revealed
> another piece of information. I was try to get her to work out if it was
> toughened glass. She replied that it wasn't, it was just that criss-cross
> stuff with the embedded wire mesh that you get in schools. Should be easy
to
> cut she said!
>
> I've made a decision. Take the glass out and replace it with ply-wood. I
> think that cutting a hole in wood will be a lot easier than putting one in
> reenforced glass!
>
> Nigel.

It is possible to create apertures in wired glass (Pyroshield) but the
failure rate is so high that its not worth the expense. I have seen it done
succesfully a few times.

Neil


Dave Burrows

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Mar 20, 2002, 1:38:42 AM3/20/02
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James bod has a lot to answer for ...cutting a round hole is possible though
sometimes awkward buta sguare hole is virtually impossible to cut once
scored with a cutter the line of the cut will follow thrugh until it reaches
the end of the glass where as in a circle the cutter scribe line meets up at
the other end so there is nowhere for the line to go..hope Ive not
confused!!
Dave

"Peter Gray" <pe...@petergray.homechoice.co.uk> wrote in message
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