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- 15 Jan 2020
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Heya guys,
Firstly sorry for asking what seems like another repeated subject - I did a forum Search but the questions I had didn't seem to get answered.
TLDR; the alcove dimensions are 140cm wide, 30cm deep. Plan to use 2x25cm metal shelf supports, sides and back, 12mm plywood top, 3.6mm bottom, 25mm wood batons, worried about possible sagging.
Longer explanation:
In an alcove you have 3 sides shored up with the wall, and if the alcove isn't too wide then you don't need to worry about the front sagging too much. This applies to the "floating" kind or whatever.
But, if you have a wide alcove (like me - 140cm), you are left thinking: "if I put a beam across the front - that is just wood that will sag!"... Unless I use a thick wood beam or metal or something.
I have found some 25cm long metal supports that I could put onto the wall - they wouldn't support the full 30cm shelf depth but 85% isn't too bad, and if everything is glued and screwed/nailed then I don't expect much sagging or support issues. Is 2 enough (spaced at about 45cm and 95cm) to help support the shelf?
So my questions are: what sort of thickness of wood should I be looking at for the front support to avoid sag and ensure I'm not under-shpporting the shelf?
No walkthrough really goes into the rules about wood thickness in relation to the gap and the spacing/ frequency of any internal supports.
Thanks.
--
old486whizz
Firstly sorry for asking what seems like another repeated subject - I did a forum Search but the questions I had didn't seem to get answered.
TLDR; the alcove dimensions are 140cm wide, 30cm deep. Plan to use 2x25cm metal shelf supports, sides and back, 12mm plywood top, 3.6mm bottom, 25mm wood batons, worried about possible sagging.
Longer explanation:
In an alcove you have 3 sides shored up with the wall, and if the alcove isn't too wide then you don't need to worry about the front sagging too much. This applies to the "floating" kind or whatever.
But, if you have a wide alcove (like me - 140cm), you are left thinking: "if I put a beam across the front - that is just wood that will sag!"... Unless I use a thick wood beam or metal or something.
I have found some 25cm long metal supports that I could put onto the wall - they wouldn't support the full 30cm shelf depth but 85% isn't too bad, and if everything is glued and screwed/nailed then I don't expect much sagging or support issues. Is 2 enough (spaced at about 45cm and 95cm) to help support the shelf?
So my questions are: what sort of thickness of wood should I be looking at for the front support to avoid sag and ensure I'm not under-shpporting the shelf?
No walkthrough really goes into the rules about wood thickness in relation to the gap and the spacing/ frequency of any internal supports.
Thanks.
--
old486whizz