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These
are the urns that will be used with our mausoleum. Not too different
from what folks are making, but you might appreciate a few observations
I have made during construction. These
urns were a garage sale find, all of $3 for the pair. They are
roughly 16" around by the same tall, the interior is about
14", so lots of room to work with. First things first, I
found initially that the base and bowl were two separate parts.
So I drilled through a small hole for the wires to pass through.
Next I cut support bars for the fans from acrylic I had laying
around so the fans were about two inches from the bowl lip.
Originally I thought I could use 4.5" muffin fans I had on
hand but they were too low wattage, 6 watts to be accurate not
enough flow. I found out when I test fired them. I then switched
to a pair of 6" fans, 40 watts, way too loud but it lofted
the material. BTW I got material at Walmarts, its not Joann fabrics
silk essence. It didn't want to be taller than 8". Now these
40 watters had too much power, and sucked the material under into
the fan blades, very annoying to say the least. Frustration was
setting in. I added panels of luaun ply to the sides of the fans,
and instead of having the material parallel to the fans I turned
it perpendicular to them. This stopped the material from being
sucked into the fans. One small problem with this setup. I didn't
have another matched pair of fans to use for the second urn, so
off to the electronics surplus shop to get (4) 4.5" fans
with greater wattage than the first set and lower wattage then
the second. Yippee I found what I needed.
NOTE:The plumbers strapping used to connect the two fans
firmly and the fan cords for easy connection.
Now I could start over more
or less. I experimented with the rail height until the fans rested
about 3" down in the bowls. At this height the material lofted
well parallel to the fans if placed just below the lip of the
bowl.
Lisa found a lighter weight cloth, so I switched to that,
which allowed me to get a much taller flame, almost 14".
It looked much better, but it still wanted to go under the fans.
Looking at the inside of the urn, I noticed that the center connection
between the bowl and base was about 2" in diameter. Next
I stripped the urn of the fans and material, so out came the hole
saw. This allows flow from beneath the fans to prevent sucking
the material into them. I mounted an outlet receptacle under the
base by drilling some holes through the plastic base.
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At this point I should mention I got some halogen pucks like
you mount under kitchen cabinets from Sams Club for $11 a set.
Hook up a pair of leads from the power cord to one set of contacts
on the outlet, and the fan leads to the other. Then first mount
one end of the outlet using 1.25" machine screw & nut then
plug the ballast into the outlet and mount through the screw tab
on the ballast. Then through the outlet to the base with another
screw & nut. BTW for those of you using fans with 2 prong connectors,
I have cords that they plug into if you want to get some - email
me
Next the wiring for the pucks is passed through the hole.
At this point I fired up the fans to test the new fabric.
Once I was satisfied with
the fans being level in the bowl I moved the fabric around in
relation to the fans. The best position seems to be about 2 inches
above the fans and perpendicular to the length of them. Since
I was using 2 sheets of fabric, the best effect was with the dowels
just offset into the air path from the midpoint, a 1/2" in
from center. This allowed airflow between the layers to enhance
the rippling effect.
At this point the fans and fabric were hot glued into
position. The fabric was also hot glued to form a sleeve to slide
over the dowels, with any excess fabric trimmed to maximize airflow.
Next I placed foam blocks cut on the 45 degree angle with
the upper edge 1/2" below the bowl rim and hot glued those
in place.
NOTE: Applying hot glue directly
to foam melts it. If you apply it to the mating surface and allow
it to cool a few seconds, the foam wont melt.
Next place the pucks on the foam blocks with the fans on and fiddle
with the position of the lights until it illuminates the fabric
to your satisfaction.
NOTE: There is glass paint available
at craft stores for$2 a bottle. The lenses on the pucks are glass,
paint one lens blue the others red.
When you like the lighting
hot glue the pucks in position
Now all that's left to do is paint the urns. To paint them the
workings need to be covered by taping some newspaper to the rim.
Then base coat the urns in your primary color. Ours will be stone
colored so we will use battleship gray. Then sponge on some white
paint, before the white dries sponge on black. There is a superb
tutorial on painting items naturally here.
Next addition will be an
improved fabric flame, and using LEDS on a 555 circuit to get
a more natural flame appearance! |