To complete my Natural Gas burner, I needed
a blower.  I ordered this one from an online
supplier.  It is a 115 volt, 60 C.F.M. blower.  
Cost was less than $30 USD.
Natural gas, pipe burner, phase two
If you know anything about pipe burners then this
image will certainly raise questions.

I don't like using set screws to hold pipes in
position......they are often somewhat insubstantial.  
You could throw this burner against the sidewalk and
nothing will move.

Very low pressure natural gas is released through a
1/4 inch orifice in the pipe entering closest to the Bell
end (left).  The pipe entering furtherest to the right
only provides stability and provides an obstruction to
create turbulence and cause more thorough mixing of
the air and gas.
I will add images as I progress with this project!
Projects Page 2