S3 prototype - part 2

More progress on the prototype. 

Brackets the hold on the second flare.

 

Lots of brackets:

My expert assistant (aka dad) drilling:

This one has been a team effort, with four involved this time.  

Plugs for the ports:

 

The ports didn't come out quite right. They were machined by CNC but I made a mistake with their location, a mistake related to rushing! So I've had to mark out the corrected port locations.

Plugged:

 

Mouth flare termination:

 Drilling new ports - not exactly a job for the average power drill! The table needs to be large and a drill press probably wouldn't do this, because they would all be too small. The shop smith is ideal here.