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Cross legs for picnic table

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Forum topic by dfox52 posted 08-08-2017 03:18 PM 308 views 0 times favorited 5 replies Add to Favorites Watch
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dfox52

27 posts in 1531 days


08-08-2017 03:18 PM

What is the best way to layout the diagonal half lap cuts for “X” shaped picnic table legs? I’ve cut my pieces to length using a rectangular template but am having dificulty accurately laying out the diagonal lap joint cuts. I’ve tried clamping the two pieces together and adjusting but that is awkward and seems like there should be a more accurate method. Any suggestions? I don’t mind doing some math if that is what it takes… :)

Thanks!


5 replies so far

View Rick_M's profile

Rick_M

10634 posts in 2218 days


#1 posted 08-08-2017 04:38 PM

The math is more complicated than expected but I think someone posted it the last time this was asked. Far quicker to either draw it full size or clamp and mark the pieces.

-- http://thewoodknack.blogspot.com/

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bondogaposis

4478 posts in 2189 days


#2 posted 08-08-2017 04:54 PM

Make a full size drawing then use that to set your bevel gauge.

-- Bondo Gaposis

View hotbyte's profile

hotbyte

989 posts in 2813 days


#3 posted 08-08-2017 05:01 PM

Lay them on flat ground or driveway and support the top piece of X with scraps under the end so it doesn’t wobble like a weeble and fall down. Align/measure everything and mark.

View dfox52's profile

dfox52

27 posts in 1531 days


#4 posted 08-08-2017 06:04 PM

Maybe I’m just too picky but it seems almost impossible to get both “Xs” precisely the same. A tiny variance in the lap joint magnifies into a 1/4 to 1/2 inch difference in the height of the X. I was just wondering if there might be a jig that would ensure all four pieces are identical.

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gargey

862 posts in 613 days


#5 posted 08-08-2017 06:35 PM

lasers

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