From Newsgroup: uk.d-i-y

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Back in the early 1990's, on my way home from Brighton
Tech I noticed a skip full of fire doors behind Boots
and lugged one out (heavy) and onto the roof bars of
my Astra estate.

This door had a rectangular wired glass 'window'
next to the flat plate that you push on to open.

It is now part of the L-shaped computer desk in my little
bedroom and fits under the window from wall to wall, supported
on 2x1 battens at each end. Been in-situ for 30+ years. I had
to cut it down to reduce its width to 27" and used the offcut
to infill the rectangular hole (now halve its width). It
was made of 34mm thick ?chipboard with plywood outer
sheathing with a Sapele? wood finish and with finished edges.

I also cut down another sapele door to a width of 30" and this
is along the longer wall and it hangs under the Boots fire door
at one end nearest the window.

I notice that both doors are about 43mm thick which is odd.
The sapele door was a lot lighter (but not as light as a normal
interior egg-box door). I always thought that modern internal
doors were 35mm thick, is this always the case ?.

I am contemplating removing the old Boots fire door because
I am finding it tricky to clean the window etc, so I need
something a lot narrower and possibly hinging up/down for
access. The problem is the Sapele door is about 28cm short
of the outer wall where the window is, so a support is
needed (currently provided by the heavy Boots fire door and
I don't know what is inside this Sapele door. It seems quite
resilient but I am reluctant to stand on it (unlike the Boots
fire door which takes my weight easily).

A trestle would do the trick -

https://www.ikea.com/gb/en/p/mittback-trestle-birch-30459997/

or a 'tillslag' for only -u5 !!! -

https://www.ikea.com/gb/en/p/tillslag-trestle-white-metal-50497192/

or this being uk.diy, I can make my own arrangement, like a
timber bracket made of two bits of 3*2 with triangular sides

I don't really want a leg (or more), I prefer open space under the
desk. Maybe a diagonal bracing across the corner where the door
is 28cm short of the out wall ?. The problem is I will have to put
the radiator back (eventually !) so there is a space issue where
the front wall support for this diagonal support ends, and how do
you attach the cut end of a piece of X*Y timber that is cut to an
angle so that it is flush with the wall and doesn't look naff ?.
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