NOTE OF CAUTION, because I make a major-league mistake here in starting to drill from the top, when of course I should have gone in from the sides... having glued the three-way tube-connectors in place yesterday evening.
NOTE TO SELF, refrain from gluing connectors in place until after this stage of build. This is because it is much easier to drill from above ~ as seen here ~ and then turn all of the tubes through ninety degrees.
There's a lot of trial and error in this game, for as the great industrialist James Dyson observed, "You learn nothing until you start building".
If you want to avoid your prototype looking like a Swiss cheese, follow the master.
