4 stroke Outboard Boat Motor Engine Swap, Part 1

UPDATE: Part 2 is here: https://youtu.be/-kDExnFkDBw
UPDATE: Part 3 is here: https://youtu.be/TsPHr4y_Hek
The adapter plate for the 4-stroke Boat Motor Engine Swap is done in my foundry in cast aluminum. In this multi-part series, I show the patterning, molding, and casting processes:

Chapters:
2:30 Ramming the core for the false drag
3:38 Ramming the false drag
6:20 Pressing the pattern into the false drag
7:33 Ramming the cope
10:29 Ramming the drag
11:58 Cutting the sprues and gates
15:04 Closing up the mold
15:29 Starting the furnace
18:40 Degassing the melt
19:35 THE POUR
22:49 Shakeout
25:23 Test fit