The layout of this shell is fairly
complex. There's a lot of things to lay out so the blank can get
busy fairly quickly. Because of the complexity, it's not a shell
that can be made small - there's too much detail that you
wouldn't be able to carve if the shell was small. For that
reason, the shell I'm going to do is about 4" across.
We layout the shell before we cut
the blank. So our shell will be laid out on the 3/4" mahogany.
We begin by drawing a circle with a 2" radius. Then draw a
vertical line through the circle. Use a combination square to
draw the line.
Then draw a line
perpendicular to the vertical line, and 1/4" below the center of
the circle. This will be the bottom end of the lower flutes on
Next, using a set of dividers, step
off three equal divisions, on each side, between the top and the
line you just drew. These points will be the ends of the convex
flutes. Later, we'll mark the location of the ends of the
Now draw a horizontal line 3 5/8"
from the top. This will be the lowest extent of the shell. The
shell is not completely round - it's wider than it is tall.
For the next few steps, we're going
to focus on the lower extent of the shell - the bottom of the
shell proper and the two hinge parts on either side (side note:
on real scallops these are called "ears").