Actually, the very first riser I used was 9 milk crates covered with two pieces of plywood which were held together by two things I made that looked like large staples. The cool thing about that riser was that we could use the milk crates for storing lights, cables, and other stuff.
This final design is basically a waterbed pedestal. It's a simple, efficient design that can support a lot of weight. I needed a 6'x8' riser 1' tall, so that's what I'll detail in the plans. Make adjustments as needed.
Having doctors probing around in your eyes trying to remove a tiny
piece of metal is not fun. This happened to me and I was
wearing safety glasses.
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Two corners of the frame will be joined with two fixed-pin hinges each
[Figure 2].
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The other two corners of the frame will be joined with two loose-pin
hinges each [Figure 3]. Remove the pins from these hinges after
mounting. Just knock them out with a hammer and punch, or cut or grind
the heads off if present.
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Cut the rod into two 18" pieces. Use a bench vise and the jigsaw with
a metal blade or a hacksaw. Bend the two pieces into L shapes so that the
total height of the L is not more than 12". These are now the hinge pins
for the two corners that come apart. [Figure 4]
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With jigsaw, cut notches out of each of the four 4' boards [Figure
5].
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Assemble the four 4' board into two X's [Figure 6].
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Lay the two pieces of plywood side by side so the long edges are
touching. Attach five hinges along the seam [Figure 7]. Make sure
the hinges nearest the edges are at least 1" from the edge. Otherwise the
hinges will rest on top of the pedesta l and form a gap. This side (the
side with the hinges) will be the bottom side.
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Carrying handles can be cut into the platform [Figure 8]. This
makes it easier to carry around, but the holes just might be in
the exact place where you want to put a stand or something. To cut the
holes, fold the platform together and stand it on the side so the hinged
side is on top. Stand next to it and mark where a comfortable place would
be to have the carrying holes on each end. Lay the platform on sawhorses
-- leaving the platform folded together so you're cutting both sides at
the same time -- and drill holes to start, then finish with a jigsaw.
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