Template. 0.063" 2024-T6 metal. Angle iron (2024 x 5/8 x 5/8 x 1/16) as stiffeners.
Gascolator drain sticks down too far. Need a flush unit.
Yes, I toss all the sharpies back into one location. Ditto with box cutters (I have four, three to disappear, one to find... rare to see all four in one location).