Yes the corner measure ments and a good right angled square are good, but
you do still get some creep afterwards I used to find, even with it held
tightly as mentioned. Of course this is often more of an issue if your door
is the sort that fits inside the frame, not like Kitchen ones that sit over
it.
Also the next thing will be the space where it goes will also no doubt be
out of true as well.

Brian

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"Tricky Dicky" wrote in message
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On Tuesday, 13 April 2021 at 09:52:12 UTC+1, wrote:
Hi all,

Firstly thanks very much for all the info on the other thread. Study now
designed so now in build phase

I have cut the pieces for the first cabinet out of 18mm ply so now looking
to put it together. It is 900mm wide (500mm deep) so wondering what the
best way to glue/ screw it all together to make sure it is square. I have
done some searching but they seem to make it up first them adjust it. I
had anticipated using fairly decent screw lengths (say 60mm) so thinking
that it would be very rigid (and heavy) so ability to adjust this way
would be somewhat limited. Also, I was planning on having a fixed shelf in
the middle to add further strength (and in reality we never change the
height anyway) so this would further impede this approach.

Any ideas how best to go about it?

Thanks

Lee.

The normal way to square up cabinet whilst glueing it together is to clamp
it with Sash cramps and measure the diagonals if equal the cabinet is square
if not a slight adjustment in the cramp positions can usually bring it
square.

Are you fitting a back to the cabinet because with a good fit and the back
cut square that often does the trick. A lot of self assembly cabinets, IKEA
et al, rely on the back fixing to square them up.

Richard