This Grecian Urn was my Christmas holiday building project.
Standing 15.5" (40 bricks) tall and 10.75" (34 studs) wide at the widest,
it weighs in at about 6.5 pounds.
It is completely hollow with no internal supports. The walls vary in
thickness from 3 studs in the neck to 6 studs in the transition area
between the Greek Key design and the neck. The body from the Greek Key
design down is 4 studs thick.
By choice, it was built using only basic bricks from 3 blue tubs and 4 purple buckets. Since I was traveling from Florida to my parents in South Carolina this became a firm limit. (Okay, it was also a limit because that is how many tubs and buckets I had.) In order to insure that there were enough red and black bricks to cover the exterior of the urn, the inside uses bricks of other colors.
Before beginning contruction, I took inspiration from the template profiling Lincoln shown on page 44 of "The Ultimate LEGO Book" and built a template of my urn through its center. This established the various diameter circles that would be used in each course. A compass and graph paper were used to determined the stud shape for each diameter circle. From the circle information I built a circle template on a large green baseplate showing each diameter circle. During construction the urn could be placed on this template as needed to verify accuracy.
With the outside diameters graphed, I placed a circle 4 studs smaller
inside each diameter circle to aid construction planning. The resulting
doughnut shape was symetrically populated such that it interlocked well
when turned 90 degrees to itself and to the next larger and smaller
circles. In the transition zone between the Greek Keys and the neck it
was required to interlock with circles 2 sizes distant, thus necessitating
the thicker wall.
The urn is actually in
3 sections,
the middle section consisting of the
widest diameter portion with the Greek Key design. The other sections
are, of course, above and below the center one.
The 3 section construction facilitated reworks that were needed to
stretch the supply of red and black bricks as the project neared
completion. In the end I decided not to fit them tightly together in
order to preserve this feature should I decide to enhance the center
section with more patterns.
In the full size version of this image you can see some blue bricks
peeking through the loose fitted sections.
The top and bottom sections have alignment bricks attached to aid
mating them with the middle section.
I spent a couple hours a day for about a week working on it. A couple days
before Christmas it was finished and I set it on my mothers' piano where it
stayed for the remainder of the holidays.
At the end of my vacation I turned the top section upside down into the
rest and placed the whole thing in a paper bag for the car trip back to
Florida.
I took it to work the first day back and set it on top of my bookshelves.