The field guides
The right number starts
with the right meaning.
Short, practical explanations for the units, dimensions and assumptions behind the tools.
Workshop reference
Nominal vs. actual lumber sizes
Read a board label, then use the measured size your calculation actually needs.
Workshop referenceBoard feet and lumber pricing
Understand volume, tally rules and the difference between BF, MBF and per-piece pricing.
Workshop referencePilot holes vs. clearance holes
Separate a thread-gripping pilot, a pass-through hole and a countersink.
Workshop referenceWhich angle is on your saw?
Distinguish an inside corner angle, an exterior turn, a saw miter and a bevel.