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  1. 13th January 2017, 09:48 AM #1
    takai
    takai is offline Senior Member
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    Default Extendable table design thoughts - single end extension, moving legs

    Ive been considering building our new dining table for a while, and settled on this sort of style:


    But recently i briefly saw an extendable table at some shop (cant remember the shop) that had one end of the table, including legs move on recessed castors with the other end fixed in place (presumably rubber feet). The butterfly leaves folded out from the middle as per usual. This is nice because it means that the big square legs are still visible at all times, rather than being tucked under the table when extended.

    Im considering doing the same thing, but wondering about the load on the runners/slides, as the table will want to bow around the runners making a pivot point. To get around this i was considering some long heavy duty drawer slides between the fixed and free ends (think fridge or ute tray slides).

    Any thoughts or ideas on how this would work?
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  3. 13th January 2017, 12:23 PM #2
    Lappa
    Lappa is offline Woodworking mechanic
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    The woodworks does slides especially for extension tables.

    Table Hardware : Slide, Table Extension, Zinc Plated Steel, Pair
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  4. 13th January 2017, 01:50 PM #3
    takai
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    Quote Originally Posted by Lappa View Post
    The woodworks does slides especially for extension tables.

    Table Hardware : Slide, Table Extension, Zinc Plated Steel, Pair
    But they are double sided only, rather than single sided. Drawer slides will work better for a single sided slide.
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  5. 13th January 2017, 02:49 PM #4
    elanjacobs
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    Häfele sell extra heavy duty runners that we use at work for extension tables, over 200kg load rating. They're not cheap though
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  6. 13th January 2017, 04:01 PM #5
    takai
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    I can get the slides relatively easily, its the rest of the engineering im thinking about.
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  7. 13th January 2017, 08:35 PM #6
    takai
    takai is offline Senior Member
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    So i was watching a few random videos on Youtube, and saw this table in the background of a table advertisement:




    seems from the second image that it is just a simple slider on parallel rails, which should make it dead simple to do.

    Or is there more to it than that?
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  8. 16th January 2017, 02:55 AM #7
    hurcorh
    hurcorh is offline SENIOR MEMBER
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    Rockler have a few extension table mechanisms to give you some ideas. I've seen them made from scratch like a pair of giant sliding dovetails. Look at canadian woodworks instagram for their rendition. (Picture from their instagram)
    Sliding dovetail.jpg

    Cheers.
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  9. 16th January 2017, 09:23 AM #8
    takai
    takai is offline Senior Member
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    Put the call out on Facebook, and one of my friends has a table of a similar design, and took some photos for me.



    Looks like they have just made a box casing for the leaf to sit in, and put that on long sliding runners.
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