ASVAB CampWoodworking Tools and Operations flashcards
8 cards with the formulas, rules and traps from this lesson. Answer in your head, then flip to check.
Term · 1/8
Rip cut versus crosscut: what decides which one it is?
Direction relative to the grain. A rip cut runs with (along) the lengthwise grain; a crosscut goes across the fibers. Cutting at the end of a board is not automatically a crosscut.
Formula · 2/8
How many board feet are in a piece of lumber?
with all dimensions in inches (one board foot is 144 cubic inches). An actual 2 by 6 by 48 inch piece is board feet.
Term · 3/8
What is kerf, and how does it change a cut list?
Kerf is the width of material a saw blade removes. Add it for each cut: three 10-inch blanks with three 1/8-inch cuts need inches of stock, not 30.
Common trap · 4/8
Jointer versus thickness planer: are they interchangeable?
No. A jointer creates a flat reference face or straight edge. A thickness planer makes the opposite face parallel to that reference for consistent thickness; it does not remove twist from a warped board.
Term · 5/8
Countersink versus counterbore?
A countersink is a conical recess so a flat-head screw sits flush. A counterbore is a flat-bottomed cylindrical recess so a head (such as a socket head) sits below the surface, often covered by a plug.
Term · 6/8
Dado, rabbet and mortise-and-tenon: what are they?
Dado: a groove across the grain of a board's face, often holding a shelf. Rabbet: an L-shaped recess along an edge or end. Mortise-and-tenon: a cavity (mortise) that accepts a projecting tenon.
Fact · 7/8
What does sandpaper grit number tell you?
Lower grit numbers are coarser and remove material faster; higher numbers are finer and leave a smoother surface. Work through a sequence; very fine grit will not quickly remove deep damage.
Fact · 8/8
Is a nominal 2 by 4 really 2 inches by 4 inches?
No. Surfaced softwood is commonly about 1.5 by 3.5 inches, so its cross-section is square inches. Use stated or measured actual sizes in calculations.