
I found that a 40 grit sanding disc on a
4” angle grinder make a very good tool for
this! You have to be careful here because
the grinder is a bit aggressive but in the
rough stages I like aggressive. Sand the
ends flat and then use the angle grinder to
work more on the rough shaping of the shell.
I found that this combo works VERY well on
the hard purpleheart and smoothes down the
facets of the joints quite nicely. Use very
light pressure or it will chew off more than
you want it to!

As you can see the shell is now very
round. The angle grinder made very quick
work of that task. As a matter of fact it
does so well that I am going to skip using
the hand plane in the future as a step to
round the shell. The hand plane often digs
too deeply and gouges the wood around odd
grain patterns causing the need for even
more sanding… so an angle grinder is the
tool for shaping of the shell!

This picture shows how round I got it
using that method. Notice the edge… nice
and smooth.

Now I cut a groove around the bottom of
the shell to accommodate the ring that the
tensioning rods go through. Many folks make
this ring of round stock. I like flat stock
for this. I think it makes a smoother
profile and looks nicer. The picture above
shows the flat steel stock that I make this
ring from. I set my table saw blade to the
same thickness as the steel so that it fits
at the correct depth like an inlay in the
wood.

And then I set the rip fence to the width
of the steel…
Then I begin cutting a groove by rotating
the drum shell over the table saw blade.

Here is the beginning of the groove…
now I set the rip fence a little closer and
cut again.
Each time setting it a bit closer…

I continue doing this until I remove as
much material as possible, and then using a
chisel, I smooth out the groove…

|