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Joinery for two face boards on a dining table base - need advice

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Forum topic by sittingaaron posted 02-06-2017 08:41 PM 522 views 0 times favorited 4 replies Add to Favorites Watch
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sittingaaron

2 posts in 312 days


02-06-2017 08:41 PM

Topic tags/keywords: joinery dining table face-to-face laminate biscuit

Good afternoon,

This is my first post so please forgive me if I’ve placed this in the wrong section or not following rules exactly.

Here’s the situation:

I’m building a dining table of my own design, but am struggling to figure out the best joint for a portion of the base and am concerned about it holding the weight of the top and will resist cracking over time.

See the image below. The legs and horizontal planks meet face to face. I first considered using large dowels all the way through the two planks and leg on all 4 corners. I also considers 3 or 4 biscuits and using glue to essentially laminate the two.

Which one will be better or is there another method that will work better? Any advice will help! The leg pieces are about 1.25” think and the horizontal planks are about .75” thick


4 replies so far

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TungOil

747 posts in 333 days


#1 posted 02-06-2017 09:47 PM

With a 4”x5”x2 glue joint in each leg you likely won’t need anything else. If the dowel joint appeals to you aesthetically use that. You could also send some screws in at the corners with plugs to get a similar look

If you are using a solid top be sure to account for wood movement when you attach to the base.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

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sittingaaron

2 posts in 312 days


#2 posted 02-06-2017 09:56 PM



With a 4”x5”x2 glue joint in each leg you likely won t need anything else. If the dowel joint appeals to you aesthetically use that. You could also send some screws in at the corners with plugs to get a similar look

If you are using a solid top be sure to account for work d movement when you attach to the base.

- TungOil

Yes I was thinking this through as well. The wood is cherry which I’ve heard moves quite a lot.

My only idea so far is to use threaded inserts in the table top and thread bolts through the bottom side of the horizontal planks. They’d be countersunk and not visible from eye level but I wasn’t sure if the slight movement in the bolts would offer enough for expansion.

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TungOil

747 posts in 333 days


#3 posted 02-07-2017 12:01 AM

Solid cherry will certainly move, as will solid anything. orient slots perpendicular to the grain in the top to allow it someplace to go and you should be fine.

-- The optimist says "the glass is half full". The pessimist says "the glass is half empty". The engineer says "the glass is twice as big as it needs to be"

View TObenhuber's profile

TObenhuber

156 posts in 1430 days


#4 posted 02-07-2017 12:46 AM



With a 4”x5”x2 glue joint in each leg you likely won t need anything else. If the dowel joint appeals to you aesthetically use that. You could also send some screws in at the corners with plugs to get a similar look

If you are using a solid top be sure to account for wood movement when you attach to the base.

- TungOil

Agreed. If you aren’t sure about the glue strength on the legs. Simple try taking some cheap scrap. Glue them perpendicular to each other. Clamp and let dry over night. Trying pulling them apart in the morning. Good luck not breaking the wood.

Then in your case, you are doubling up the “stretchers” on the legs. Nope, those aren’t going anywhere. I do like using a large dowel through similar joints.

These benches have stretchers glued to the legs. Then a 3/4” dowel through to reinforce. A couple more dowels through the top and that’s it. They are solid as a rock.

-- Travis, Virginia, www.facebook.com/CreativeWoodworksHybla

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