This one minute video clip will display you how this draw leaf table operates: fairly than going into a long and detailed explaination of just how I developed this table, instead, I"ll focus on helping you understand just how the table operates therefore you deserve to design and build your very own version.
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Here is a color coded picture of the table that ns will usage to describe the basic operation. Notice an initial that there space two tops, an upper peak in dark brown the is the yes, really table top, and a second top under the an initial that consists of 3 sectons: a middle section in green and also two draw leaves at either finish in light brown.
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The table through both attract leafs in the expanded position. Notification the crucial element of this architecture is that as each leaf is extended, once it will the end of that is travel, that snaps into a position that is exactly level with the yes, really table top, properly extending the length of the top. In effect, each attract leaf need to rise follow me a ramp device the thickness the the table peak such that when it reaches the finish of its take trip along the ramp each leaf is at the very same level of the top. This is the vital to the tables operation and also I"ll explain much more about just how this functions a little bit later.
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One of the key reasons this have the right to work is that the optimal actually floats ~ above the table and is hosted in place by 2 pegs you have the right to see here. The pegs in the table optimal are no really drawn to scale. In actual practice, I used pegs the were 1.25 inch in diameter. The feet in the center section space actually slightly bigger in diameter. The to the right of the pegs into the holes is key because castle both must organize the table somewhat firmly in position, yet permit the height at either finish to increase as either leaf is pulled out. When the leaf reaches its completely extended position, that is the top that snaps earlier down together the leaf is extended past and also no much longer supports the top.
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There are numerous things of keep in mind in this picture. First, notice that the slide transforms thickness from around 2 inches towards the middle to slightly less than 3/4 inch when it get the finish of the leaf. This change in measurement forms the "ramp" that enables the sheet to rise as it is pulled out. Second, notice that there room two clues of call that the ramp makes with the table base. ~ above the fixed facility leaf, the ramp contact the sheet at the point shown. Note that that does no make call in the notch that is reduced thru the center brace thru which the passes. The notch in the center is much more of a side-to-side guide. Note that the other place the ramp contact the table at the bottom of the notch reduced into the apron. The depth of the notch in the apron must be extremely an exact because that depth, along with the thickness that the ramp in ~ the allude of contact, space what establishes the elevation that the leaf will certainly rise once it if totally extende or completely inserted.
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Here is an exerpt from mine shop drawings that reflects the certain dimensions native the table i built.
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I provided my tapering jig to cut the angle for the slider ramps. This was an extremely fussy reduced that had to be dead-on to also match the depth that the notch in the apron so the leaf would be positioned at precisely the same height as the main table top when the leaf is totally extended.
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Here room a couple of images showing just how the slides connect to the leafs and pass thru notches cut into one of two people apron as well as a facility divider. There is enough room in the center divider to allow the slides to quickly pass previous each other, but not so much as to enable the slides to rack together they are relocated in and also out. The second picture shows how the slides space secured come the leafs utilizing screws and also glue. If friend look carefully at the bottom image, you"ll note that the slide extends to the end of the leaf. Later, ns trimmed the on slide so it only sticks previous the apron by around an inch, but during fitup, ns left that long. One other essential thing the is not shown is a prevent that i fabricated come not enable the slides to prolong too far. Ns made a pair of protect against blocks that were screwed to the slides that prevent them from passing totally thru the facility apron.
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Here is the table simply prior come staining. These pictures present the two alignment feet in the center section. Also note the in the bottom picture, the leaves are fully extended. Had the top remained in place, both leafs would have risen to be in exact vertical alignment through the top.
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After finishing and virtually ready come go the end the door. It"s complicated to see, but you"ll an alert that the height of each slide appears to it is in unfinished. That"s due to the fact that I"ve set up a thin, short friction UHMW ice cream to this surfaces to enable the system to work with as little friction as possible. i don"t have actually a snapshot that shows it, yet I likewise installed numerous strips the UHMW tape to the bottom that the optimal itself.


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As the leafs room pulled out, this strips effetively lift the top very slightly above the sheet so there is no wood to lumber contact.