calculus in the use of salvage

before cutting into your plywood sheet, calculate whether you can use less than half of your material.

if you can, you should continue to calculate to keep waste to a minimum.

if you must use more than half, the sheet becomes dedicated to the project. overbuild. carefully.

praise be, everything works out just like i planned. the world ends with a whimper.

soon, i break ground for shelter. with the machinery of oil.