Recent content by typonaut

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    Roller guide for foldaway bed

    No, the entire mattress would be usable, even if it were fully beneath the desk, because it is much lower than the desk. I would expect there to be ~400mm between the upper surface of the mattress and the desk. Not much, so half extends out to give a bit more room – perhaps that needs to be more…
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    Condensation on the frame of new aluminium windows – slight reprise

    Yes, heating up the window frames removes the condensation. Just blowing a fan over the windows, with no heat, alleviates the issue a little (I would guess that this is actually just drawing in warm air from the room, and sending cold air out into the room). But, I think insulation is a more...
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    Condensation on the frame of new aluminium windows – slight reprise

    Of course it doesn’t vanish – but if there is no cold surface for it to condense on, then it is not a problem. Humidity in the air (water vapour) is "normal", you end up with problems if it is not there. In a "normal" room, with no humidity problems, you’ll get condensation on a glass filled...
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    Condensation on the frame of new aluminium windows – slight reprise

    The combined temperature and humidity gizmo reads ~50% at 20-22 degrees in the middle of the room (sometimes it is lower). At the windows this increases dramatically when it is cold outside, as the temperature there can be 6-8 degrees lower. On the frames themselves I would imagine the...
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    Roller guide for foldaway bed

    When in “storage” mode the “top” (mattress) faces the room. I wouldn’t expect the bed to be made up when in storage (might happen occasionally, but usually not). When in use the bed would be under the desk, probably about half protruding.
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    Roller guide for foldaway bed

    Let’s put it another way, it is a lot more expensive than ply. Ply will give the required strength, the UHMW in a thin strip, will give the friction resistance. I had quick look online, people were quoting over £400 for 300*300mm sheets 50mm thick. The track is going to run the best part of a...
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    Roller guide for foldaway bed

    Having looked at the price of UHMW sheet I think that route is not feasible, as it would seem to increase the budget of the entire project by about 200%. However, I think that the general idea is sound, and that guides made of ~25mm ply, with UHMW friction surfaces would work well. Thanks.
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    Roller guide for foldaway bed

    There are various forms like this available commercially, I think the point at which they fail the utility test is when you have a reasonable sized monitor on the desk…
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    Roller guide for foldaway bed

    Ok, I'll be looking out for a standard mattress that folds lengthwise… :-/
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    Roller guide for foldaway bed

    And there is an explanation as to why that won't work.
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    Roller guide for foldaway bed

    Eagerly awaiting an example! :)
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    Roller guide for foldaway bed

    If you push the bed back from the outside edge what is going to encourage the inside edge to climb up the wall.
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    Roller guide for foldaway bed

    It’s probably desirable for the bed to extend fom under desk, at least so someone can sit on the edge. I had considered various hinges, but they inevitably foul the desk (as yours would).
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    Condensation on the frame of new aluminium windows – slight reprise

    If the humidity in a room is "normal", and you are getting condensation, then that is an insulation issue, not a ventilation issue. As far as my experiment has gone there is no transfer of the condensation to another location. As noted above, the only transfer I am seeing is to the glass, which...
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    Roller guide for foldaway bed

    This won’t work. First reason is that it won’t take a standard mattress. However, overriding that is that under desk height is approximately 730mm, and the bed length is in the region of 1950mm. 1950mm/2 is substantially more than 730mm, without allowing for any ground clearance… so it wouldn’t...
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