Material Processing 1 Final Exam Study Guide

Vocabulary study cards covering safety, math, material properties, stationary tools, joinery, finishing techniques, and project estimation for Woodshop/Material Processing 1.

Personal Protective Equipment (PPE)

Sanitized safety glasses for solids and chemical splash goggles for hazardous chemicals, both with $ANSI Z87.1$ markings, required when power equipment or tools are in use.

Margin of Safety

The minimum required distance hands and fingers must maintain from a moving blade, cutter, or bit.

Band Saw Adjustment

Setting the upper blade guide assembly so that it clears the top surface of stock lumber by roughly $1/8$ to $1/4$ of an inch.

Kickback

Occurs when a workpiece twists, binds, or stalls against a rotating saw blade, violently hurling the material back toward the operator.

Riving Knife

A safety feature on a table saw used to keep the cut (kerf) open behind the blade to prevent kickback.

The Metal Hook (Tang)

The small metal tip at the end of a tape measure that is intentionally loose to automatically account for its own thickness for precise measurements.

Standard Scale Graduations

The standard smallest fractional increment typically utilized on high school woodshop tape measures is $1/16$ of an inch.

Blade Alignment

The practice of placing the saw blade on the waste side of the layout line to ensure the finished piece is not short.

Hardwoods (Angiosperms)

Deciduous trees that drop their leaves annually and produce covered seeds, such as Oak, Maple, and Walnut; includes Balsa despite its soft physical density.

Softwoods (Gymnosperms)

Coniferous trees that typically feature needles and cones, such as Pine.

Hygroscopic Nature

The characteristic of wood to act like a sponge, continuously absorbing and releasing atmospheric moisture, causing cells to expand perpendicular to the grain.

The Jointer

A stationary tool used exclusively to flatten the wide face or true/square the edge of a board.

The Thickness Planer

A machine used to reduce a board to a uniform, specified thickness and make a face parallel to the opposite face.

The Chop Saw (Miter Saw)

A tool engineered for quick crosscuts and miter cuts; it must not be used for rip cuts.

Try Square & Combination Square

Tools used for verifying that an edge or joint is at a perfect $90$-degree angle relative to a face.

Butt Joint

The simplest, structurally weakest joint where two pieces meet end-to-face or edge-to-face, relying on end-grain gluing.

Mortise-and-Tenon Joint

A highly durable mechanical interlocking joint consisting of a protruding tongue (tenon) fitting into a matching slot (mortise).

Grit Number

A numerical value indicating the size of abrasive particles on sandpaper; lower numbers are coarse, while higher numbers are fine.

Grit Skipping

Jumping from a coarse grit to a fine grit without using intermediate grits, which traps deep scratches in the wood fibers.

Scuff Sanding

Lightly using a very fine abrasive ($320-400$ grit) between dried clear coats to create a mechanical bond for the next layer.

Fish-Eyes

A finishing defect characterized by tiny, crater-like holes caused by surface contaminants like oil, silicone, or moisture.

Board Foot

A volumetric measurement equivalent to a board that is $12"$ wide $\times$ $12"$ long $\times$ $1"$ thick; calculated as $\frac{\text{Thickness (in)} \times \text{Width (in)} \times \text{Length (in)}}{144}$.

Blueprint Dimensions Order

The standard universal manufacturing order: Thickness $\times$ Width $\times$ Length ($T \times W \times L$).

Kerf

The specific width of the slot cut or material removed by the saw blade itself.

Waste Allowance

A standard cushion of $10\%$ to $15\%$ added to material lists to accommodate defects and kerf losses.