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PostPosted: Fri Jul 27, 2018 6:50 pm 
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Hi All. I need a custom single flatbed drawer that would be used for keeping tools while working at my workshop. But the problem I am having is I don’t have any support from sides where I can mount the slides/runners. Only option I have is to mount the slide just underside of the main cabinet and use the top side of flatbed to mount against the drawer. Weight on the flatbed drawer could be upto 25-30kg. Can the runner handle the weight of flatbed with load when it’s top-mounted like this? I have added a picture , tried to demonstrate what I am trying to accomplish. Thanks in advance.


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PostPosted: Fri Jul 27, 2018 7:24 pm 
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Can you not provide some support at the sides?

It should be a fairly simple task and will probably survive much longer than a top hung version.

What draw runner do you envisage using if it is tophung? Most manufacturers will show a max. weight as part of their spec.

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PostPosted: Fri Jul 27, 2018 10:25 pm 
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ayjay wrote:
Can you not provide some support at the sides?

It should be a fairly simple task and will probably survive much longer than a top hung version.

What draw runner do you envisage using if it is tophung? Most manufacturers will show a max. weight as part of their spec.


Thanks for your reply.
There's no support from the sides because it will be mounted just underneath of a furniture. Just in the gap where furniture legs are mounted. I could make a grooved wooden panel as sides and screw it against the furniture. But I am not sure if that would be comparatively any stronger than top hung version!!?? Do you have any suggestion?

I am planning to use this https://www.screwfix.com/p/hafele-ball-bearing-drawer-runners-450mm/1406j


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PostPosted: Fri Jul 27, 2018 11:06 pm 
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Tapash wrote:


I don't think you can mount those as shown in your diagram. An L bracket fixed to the underside of the workbench might work though (see link below) and keep the runners in the correct orientation. Max weight capacity 35kg according to the spec.

https://www.hafele.com/us/en/product/ac ... d00020023/

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PostPosted: Fri Jul 27, 2018 11:19 pm 
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definately not under the top as you are adding load to a span where you will get sag
where as the same load to the sides is fully trying to squash [compress ] so easily handled
also a14mm screw wont hold much weight pulling from underneath

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PostPosted: Sat Jul 28, 2018 11:36 am 
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As others have said this won't work. Drawer runners are designed to fix into the sides of cabinets and either into the sides of drawers or underneath them. The small screws you can use with drawer runners (no bigger than 3.5mm or #6, maximum length about 16mm or 5/8in, because you'll probably be going into 18mm material) work well enough when they are used horizontally (as in a conventional drawer box mounting) as the load on them is vertical with no pull-out loading on the thread, but as B-A says they offer almost zero pull-out resistance when used vertically because the threads are so small. Get a #6 x 5/8in screw and have a look yourself and you'll see why. The clearances in a drawer runner also mean that you can't go to a bigger screw, such as a 4.0mm or #8, because the larger screw heads will foul in the drawer runner. I also have my doubt about having the two drawer runners on top as they will get in the way of whatever it is you intend to load onto them and in addition they will be vulnerable to dirt ingress and accidental damage.

On the other hand if you could glue and screw a couple of 2 x 1in hardwood (not softwood or ply or MDF) battens to the underside of your top using, say, 4.0 x 65mm (#8 x 2-1/2in) screws (minimum three per batten) you could then use even low cost bottom fix runners to carry a flat plywood, MFC or MDF shelf

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This type of runner (commonly used in economy kitchen units) has the ability to carry fairly heavy loads such as those you envision and the fact that they wrap under the shelf is a major plus in this case. Because the battens are hardwood it will be necessary to pilot drill and countersink them before screwing to prevent them splitting

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PostPosted: Sat Jul 28, 2018 12:07 pm 
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only thing that springs to mind is a keyboard drawer runner

eg. https://www.amazon.co.uk/Runner-Keyboar ... F779PRB18J

or the standard way of a timber frame

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PostPosted: Sat Jul 28, 2018 12:50 pm 
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Two pieces of U section steel or aluminium screwed on their side so that the channel is innermost and a piece of ply cut to suit. Simple enough and should be strong enough too.


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PostPosted: Sat Jul 28, 2018 2:02 pm 
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Just had a look on the Hafele site and they do keyboard runners rated to 35kg

https://www.hafele.co.uk/en/product/bal ... 300020023/

https://www.bullerltd.co.uk/accuride-21 ... unner.html



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PostPosted: Sun Jul 29, 2018 6:59 pm 
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Bob225 wrote:
Just had a look on the Hafele site and they do keyboard runners rated to 35kg

https://www.hafele.co.uk/en/product/ball-bearing-keyboard-shelf-runners-single-extension-accuride-2109/0000001e0002807300020023/

https://www.bullerltd.co.uk/accuride-2109-keyboard-shelf-runner.html


Thanks for your reply. I think this is what I needed!!! :cheers:


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PostPosted: Sun Jul 29, 2018 8:37 pm 
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dont know the first thing about the cabinet :dunno:
what is it made from and method off construction
also whats it already containing weight wise :dunno:

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PostPosted: Sun Jul 29, 2018 8:40 pm 
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Tapash wrote:
Bob225 wrote:
Just had a look on the Hafele site and they do keyboard runners rated to 35kg

https://www.hafele.co.uk/en/product/bal ... 300020023/

https://www.bullerltd.co.uk/accuride-21 ... unner.html


Thanks for your reply. I think this is what I needed!!! :cheers:



I've seen those before somewhere! :roll:

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PostPosted: Mon Jul 30, 2018 11:32 am 
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Ah I didn't notice the link, I did add a bullers link tho :?


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