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If you remember awhile back I machined one end of this piece because I
didn't know exactly how long it would end up? Well now I do after
measuring across the arms after attaching them. That pencil line
represents how much I'll need to remove.
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| The above pencil line was measured with a tape measure,
but that's not good enough for me. To find the exact number I needed I
measured across both side pieces with the top/step attached (12.000"),
the thickness of both arms (.754 X 2), and the thickness of the lip on
the two
bushings (.060 X 2), which adds up to 13.628".
What you see below is how I made sure I had the right length. I have
some large 12" dial-calipers but those were to small to measure what I
wanted so I improvised. What I did was clamp two 6" parallels end-to-end
making sure the left side was flush with the end of the wood. So with
those two in place that makes up 12.000" which means I could use my 6"
dial-calipers to measure the remainder. This worked out great and made
it very easy for me. Whatever works you know!
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Here I'm drilling the holes in the arm for the lower step/chair
back.
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After doing some test fitting, things are looking pretty good.
Notice I placed the lower step/chair back just behind the radius at the
end of the
arm. I thought it would look better this way instead of flush with the
end of the arm.
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The red arrow represents the area that I'll be adding
a support. I'll be using a 3/4" dowel rod for this but I won 't go all
the way through the side pieces.
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Here I'm using a 3/4" end mill to make the pocket for
the dowel rod. The pocket depth is half the thickness of the work piece.
This worked great and makes a flat bottom too.
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Here you can see the pockets in the side pieces along with a dowel rod
that is 11.296" long. Yes I know that's a weird number but that's what I
needed.
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Nice clean pocket that is exactly 3/4" diameter.
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The dowel rod fits great and has a slight press fit,
which is perfect.
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Now I need a place for the movable arm to rest against when it's being
used as a chair. The pencil line that runs horizontal is the distance that
I want it from the top surface. The angled line represents the side of
the arm when I had it in the position that looked right. The arrow is
the at the spot that I'll be putting my hole for my dowel rod. The dowel
rod will stick through about one inch on each side.
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