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Serious suggestion with step-by-step instructions. If this
idea is baked, please provide a source where I can buy
have them made. Otherwise I'll be making my own next
I''ve got a new window air conditioner on order and I
provided little accordion-pleated
expansion panels won't
enough to fill the window opening on either side of the
And even if they
were, the plastic is thin, flimsy, and provides no
My solution: Measure the openings - for this example,
be a space about 14" tall and 16" wide on both sides of the
The spaces to be filled will be slightly larger,
as they include the recessed track the windows slides in.
Cut two thin panels of wood or rigid plastic to 14x16,
matching piece of closed cell foam between 1/2" to 1"
a hole through the middle and pass a carriage bolt
thread a wingnut on the end. Make two sandwiches like
one for each side.
Put the sandwich in the window opening and tighten the
to squeeze the outer panels together. As it squeezes,
foam core will expand slightly at the edges into the
and seal any small gaps all the way around.
Might need more than one bolt to tighten evenly all
Self-shaping Tubes through Explosives
Okay, the video is spheres, not tubes, but the same principle applies. [AusCan531, Jul 01 2021]
||I don't think you'll find anything one-size-fits-all. In the past I have used styrofoam panels. If you mask off the air conditioner and the window edge spray foam will seal it in without air gaps and excess can be cut away.
||Yeah, I've given up anything completely ready made. I was
hoping maybe a kit with some oversize pieces as I've
described that can be cut to fit. As the window AC is only
installed during the summer (and in the garage the rest of
the year) I'm trying to make it easy on all counts - install,
remove, store, and reuse. Spray foam gap sealer and sticky
tape would be fine otherwise.
||And I can't be the only person who hates those pleated
accordion panels. If this could be made in kit form, do you
think it would be marketable?
||It's hardly a halfbaked idea without some extra
features like an exploding outwards claymore mine
surface to deal with any burglars tempted to break
in. Why has it got so tame and domesticated here?
Bring out the pyrotechnics! This isn't the diy handy
||You could make the entire wall retractable, and have a second wall retracted on the other side, so that in the summer you retract the winter wall and extend the summer one. That way you would not need to remove the spray-foam sealant.
||[xenzag], we have numerous, um, devices... to keep
burglars from getting too close to any of the windows. And
being good neighbors, I've arranged for them to be nearly
silent*. Wouldn't want explosions or screams to disturb
* Nearly silent. Just a swish and maybe a gurgle and thump
immediately after. In the morning someone just has to hose
away the blood and dispose of any body parts the coyotes
didn't take overnight. Fortunately I leave for the office very
early most mornings so my wife gets to do it - along with
||I somewhat agree with [xen]
||maybe * rectangular* is the problem
||Fine, fine. Ill add some shaped charges to fire
metallic swarf at anyone tampering with it from
the outside. Therell be hell to pay if it wakes my
wife, but anything to keep the peace here.
||Probably need to modify panels around the edge to
prevent damaging the AC or window frame.
Anything else you can think of?
||// Might need more than one bolt to tighten evenly all
||Yes, needs more wingnuts.
||With or without shaped charges?
||Ooh; explosive charges ON the wings of the wingnuts. One
side blows - auto tighten. Other side blows - auto undo!
explosive bolts are WKTE, but only as
single use, (very) quick release fasteners. Dont
know of any fasteners that fix in place by use of
explosives either - maybe theres a separate HB
||But what about the original, basic idea as posted?
Its a big ask, but I know some of you can be
practical and serious, when theres nothing better
||I dont have air conditioners but one time I had a
small one that fit in the window and I shoved
towels on both sides to keep the air out. Also tried
cardboard, duct tape, and a 2 x 4.
||The accordion pleats should play some type of
music when the air blows
||Fooey, I may mark this one for deletion myself. It
looks like itll be easier to just get a couple of
1/2 thick HDPE panels cut to size and put
insulating strips along the edges. Maybe a bit
more expensive - but time is money too.
||Shame to give up on the shaped charges though.
Maybe I can still add some around the window
frame, just for sport.
||Place thin-walled pipes into the gap. The pipes are filled
with a carefully calculated amount of explosives and sealed
at both ends. After detonation they are now form-fitted
with a weatherproof and burglarproof seal. See video for
concept in real life [Link]