Sporacles 4 inch plate build

[Sporacle]

So I've finally got my ducks in a row and am embarking on a 4 inch 4 perf plate build.
I will try and keep it sequential and post as much as I can.
Plates are flattened 2 inch with 1.5 mm holes on a 5mm grid, about 208 holes in total, square areas are TBA for downcomer and weir.
There is a central hole that the pattern is based on that allows me to spin the plates round.
Everything is centre punched and the plates are lubed with lanolin spray prior to drilling.