The most essential parts are always on back-order.
-- Mechanics' Maxims n°1
The most essential parts are always on back-order.
-- Mechanics' Maxims n°1
A nut dropped on the ground will roll until it finds a crack to fall into.
Corollary: The more you need the nut, the deeper and narrower the crack will be.
-- Mechanics' Maxims n°2
The tool you need is back at the shop.
-- Mechanics' Maxims n°3