The Boom will also be made from Queensland Hoop pine. Unfortunately, I didn't have a stock piece thick enough so armed with my trusty Triton bench saw and thicknesser I set about making some dust.
I have to laminate two pieces together which is a bit more labor, but I think a laminated boom is stronger.
The timbers are ripped down to size.
I left a few extra mm in thickness which will be removed after the laminate is cured.
The two sections are glued together.
I used lots of clamps and an old, laminated beam to ensure the boom dries nice and straight.
The laminated boom is cleaned up and
using a Japanese saw I tapered the aft 381mm down to 38mm.
Another view.......
As the manual suggests the tapered end saves a little weight and looks good.
I followed my theme and decided to add two inserts along each side of the boom.
I marked up for two 6mm wide grooves to be routed along both sides of the boom allowing for the 10mm edge roundover routed later. You can see the router bit and a side fence set up on my small handheld router.
Here are the two routed grooves 2mm deep along the length of the boom.
A thin 6mm X 3mm length of blue gum is shaped to fit the groove.
The two strips are trial fitted; the dark red colored blue gum strips will look nice against the light-colored hoop pine.
The strips are epoxied in place.
Lots of clamps hold the strips in place until the glue dries.
The clamps are removed and the Bluegum inserts sanded down with a belt sander.
Another view.......
Another view forward end of boom.
After a trip to the local hardware to purchase a 10mm radius round over router bit I set to work making dust.
With the round over routing complete I cleaned up by hand sanding.