On 13/04/2021 09:52, 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.

Jig it.
You need some way to establish that it IS square - trigonometry or a
carpenters square - and some way to clamp it square while the glue sets

Don't bother with screws

For ply - esp. 18mm ply - glue - simple white PVA - is as strong as it
gets.

I have used panel pins to stop joints sliding while the glue is wet.

You do not say exactly what the shape is - if its like a square tube you
are assembling, well then normally you would use uber long sash clamps
on each end ...

https://www.amazon.co.uk/Amtech-D133...P6/ref=sr_1_11

....and a squared up bench, like what you assemble them ON should have a
pair of planed battens glued or screwed on making a correct right angle
- use a square to do this - and then you push the clamped up frame into
that while the glue sets. What you invest in or make of course depends
on how many you are ever going to make.

I have done some searching but they seem to make
it up first them adjust it.

Id love to know what 'it' is..

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?

Not much more without knowing what 'it' actually is...

Thanks

Lee.



--
The urge to save humanity is almost always a false front for the urge to
rule.
€“ H. L. Mencken, American journalist, 1880-1956