First I start out with the square blank
Now choose which pattern I want as far as size
Trace the pattern and cut it as close as possible on the band saw so it looks like this
Next if I do a 3" call I use a 3" forstner bit and drill the blank
Here's the depth you need to get the jaws of the chuck to hold
This is the pot blank thickness I like to use
Attach the blank using these jaws
Now turn the blank until it is perfectly round then put it in these jaws like so and turn the inside of the pot
Once the inside is all turned take it off the lathe and layout your sound holes using a center finder
Using a set of wing dividers determine where to place the holes
Now flip it over and mark the back of the call
Now drill your holes in the marked spots and put the blank back on the chuck like this
I then sand my holes to remove any tear out from the drilling at this point.
Now I turn the back of the call and sand it this one is ready for finish and the glue up
The End
Larry