With all of the outer surface cleaned up, it’s time to separate the top from the bottom.
On my prototype box I used only a handsaw to separate the top from the bottom. My saws are not sharp or true enough and I had to trim way too much afterward. So I decided to use the table saw function on Shopsmith instead.
I made sure the fence was adjusted o match the scribe lines on the box. and adjusted the depth of cut that ti would NOT cut all the way through the side wall.
First cut the short sides
Then cut the long sides
Now the top can be separated from the bottom using a hand saw.
Then use my block plane to trim off the flashing.
Looking good so far
Now to install the hardware.
-- - Terry