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newSchoolWorks.com › VoTechWorks › Building & Construction › Carpentry › Rough & Finish Carpentry › Lesson 5
BLD-CARP03-02 · Lesson 5 · 13 clock hours · lab

Stationary Equipment: Table Saw, Miter Saw, and Jointer

Objective. Students will set up and operate a table saw, compound miter saw, and jointer with guards in place and correct body positioning, producing dimensionally accurate parts.

Stationary Equipment: Table Saw, Miter Saw, and Jointer

Stationary power tools are the backbone of a carpentry shop. The table saw, compound miter saw, and jointer each perform precise cuts that hand tools and portable saws cannot match for speed or accuracy. Mastering these three machines — safely and correctly — is a core NCCER Carpentry competency you will carry to every job site and shop.

General Safety Rules for All Stationary Equipment

Before you touch any machine, review these non-negotiable rules:

The Table Saw

The table saw rips stock parallel to the grain using a rip fence as a guide. Key setup steps:

1. Blade height: Raise the blade so the gullets (the spaces between teeth) clear the top of the workpiece by about 1/8 inch. Higher exposure increases kickback risk and injury severity; lower exposure reduces cutting efficiency and can cause burning.

2. Rip fence: Measure from the inside face of the blade (the fence-side tooth) to the fence face. Use a reliable tape or setup block; confirm with a second measurement at the front and back of the fence to ensure it is parallel to the blade. A fence that toes in toward the blade causes burning and kickback.

3. Splitter/riving knife: This thin metal plate behind the blade keeps the kerf open so the wood does not pinch the blade and kick back. Always confirm it is installed and aligned with the blade plate.

4. Anti-kickback pawls and blade guard: Lower the guard over the blade before starting the cut.

5. Body position and push sticks: Stand slightly to the operator's left (offhand side) of the blade line. Use a push stick whenever the rip width is narrower than about 6 inches. A featherboard clamped to the fence or table holds the workpiece firmly against the fence throughout the cut.

After ripping, measure the finished width with dial calipers at three points along the board. Consistent readings confirm the fence is parallel and the feed rate was steady.

The Compound Miter Saw

The compound miter saw swings left and right (miter angle) and tilts the blade (bevel angle) to make angled crosscuts in molding, framing lumber, and trim. A 10-inch saw with positive stops clicks precisely into common angles such as 22.5°, 45°, and 90°.

The Jointer

The jointer flattens one face and straightens one edge of rough-sawn lumber, creating the reference surfaces that all subsequent milling depends on. A 6-inch jointer has an infeed table (which you lower to set depth of cut), a cutterhead, and an outfeed table (set level with the top of the cutterhead arc).

Accuracy Standards for This Lab

Your work is measured against these tolerances:

These are real-world finish-carpentry standards. Sloppy machine setup compounds through every downstream operation — a fence off by 1/16 inch on the table saw means every ripped piece is wrong before you ever pick up a nail gun.

Key terms10

Riving knife / splitterA thin metal plate mounted directly behind the table saw blade that keeps the kerf open and prevents the wood from pinching the blade, reducing kickback risk.
KickbackA sudden, violent ejection of a workpiece backward toward the operator, caused by the workpiece pinching the saw blade or being caught by the back of the blade teeth.
FeatherboardA hold-down device with flexible fingers that presses the workpiece firmly against the fence or table during a cut, maintaining consistent contact and reducing the chance of kickback.
Positive stopA detent mechanism on a miter saw that allows the miter or bevel index to snap precisely into common preset angles such as 0°, 22.5°, and 45°.
Infeed / outfeed tableOn a jointer, the infeed table is lowered to set the depth of cut; the outfeed table is fixed level with the top of the cutterhead arc and supports the workpiece after the cut.
Face-jointingPassing the wide face of a board over the jointer cutterhead to create one flat reference surface from which all other dimensions are measured.
KerfThe slot or channel removed by a saw blade as it cuts through material; its width equals the set of the blade teeth.
Lockout/tagout (LOTO)An OSHA-required safety procedure in which a machine's energy source is isolated and locked in the off position before any maintenance, blade change, or jam-clearing work is performed.
Dial caliperA precision measuring instrument that displays readings on a dial face and is used to verify finished dimensions to within a few thousandths of an inch.
Feeler gaugeA set of thin metal blades of known thickness used to measure small gaps, such as the joint line of a miter cut.

Worked examples4

1. You need to rip a piece of 3/4-inch plywood to a finished width of 3.500 inches. After the cut, you measure the piece at three points with dial calipers and read 3.484 inches, 3.490 inches, and 3.487 inches. Are all three measurements within the 1/32-inch tolerance of the 3.500-inch target?
  1. Convert the tolerance to decimal inches: 1/32 inch = 0.03125 inch.
  2. Determine the acceptable range: 3.500 − 0.031 = 3.469 inches (lower limit); 3.500 + 0.031 = 3.531 inches (upper limit).
  3. Compare each reading to the range: 3.484 is between 3.469 and 3.531 ✓; 3.490 is between 3.469 and 3.531 ✓; 3.487 is between 3.469 and 3.531 ✓.
  4. All three readings fall within the tolerance band, so the cut is acceptable.
Answer: Yes. All three measurements (3.484", 3.490", 3.487") are within 1/32" (0.031") of the 3.500" target, so the rip is within tolerance.
2. You use a feeler gauge to check the gap on a 45°–45° miter joint. The 0.030-inch blade slides through the joint with no resistance, but the 0.035-inch blade will not enter at all. Is the joint within the 1/32-inch (0.031-inch) gap specification?
  1. Identify the known gap range: the gap is larger than 0.030 inch (that blade passed freely) and smaller than 0.035 inch (that blade would not fit).
  2. The gap is therefore between 0.030" and 0.035".
  3. Convert the specification: 1/32 inch = 0.03125 inch.
  4. The lower bound of the gap (0.030") is just under the limit, and the upper bound (0.035") exceeds it. Because the 0.030" blade passed freely, the actual gap is greater than 0.031". The joint does not meet the less-than-1/32" specification.
Answer: The joint is out of tolerance. The gap exceeds 0.030" and the spec requires it to be less than 0.031" (1/32"). Recut or adjust the miter angle and retest.
3. After face-jointing a 24-inch-long board, you lay a straightedge across it and find a gap of 1/16 inch at the center. The flatness specification is 1/32 inch per foot. Is the board flat enough?
  1. Determine the allowable gap for 24 inches (2 feet): 1/32 inch per foot × 2 feet = 2/32 inch = 1/16 inch.
  2. The measured gap is exactly 1/16 inch.
  3. Compare: 1/16 inch measured = 1/16 inch allowed. The board is exactly at the limit.
Answer: The board is right at the tolerance limit (1/16" gap over 2 feet equals exactly 1/32" per foot). Technically it meets the spec, but taking one more light pass to tighten the surface is good practice before finish planing.
4. Your rip fence is set using the scale on the table saw, which reads 3.500 inches, but your first test cut measures 3.562 inches wide. How far off is the fence, and in which direction should you move it to hit 3.500 inches?
  1. Calculate the error: 3.562" (actual) − 3.500" (target) = +0.062" (the piece is too wide).
  2. Convert to fractions for reference: 0.062" ≈ 1/16", which is about 2/32".
  3. Because the piece is wider than desired, the fence is too far from the blade. Move the fence toward the blade by approximately 1/16 inch.
  4. Make a second test cut on scrap and measure again before cutting your project stock.
Answer: The fence is approximately 1/16" (0.062") too far from the blade. Move it toward the blade by that amount, lock it, and verify with a test cut before ripping the actual workpieces.

The math in this lesson1

Learners check caliper readings to thousandths, feeler-gauge gaps, flatness per foot, and rip-fence offset.
N-Q.3
Brush up in the math halls at newSchoolWorks.com:
In class: Table saw fence and blade setup: students set the rip fence to 3.5 inches, confirm blade height, check blade guard and splitter/riving knife, then rip three pieces of 3/4-inch plywood, measuring finished width with calipers. · Compound miter saw angle cuts: students set the saw to 45 degrees miter and 0 degrees bevel, make four mating cuts on pine molding stock, assemble the corner dry, and evaluate joint tightness with a feeler gauge. · Jointer face-joint and edge-joint exercise: students joint one face and one edge of a rough-sawn board, verify flatness with a straightedge, and confirm the face-to-edge angle with a square before calling the board ready for finish planing.
Materials: Table saw with rip fence, guard, and splitter; 10-inch compound miter saw with positive stops; 6-inch jointer with guard; dial calipers; combination square; feeler gauge; push sticks; featherboards; pine molding stock; 3/4-inch plywood; safety glasses; face shield; hearing protection; NCCER Carpentry Level 2 Trainee Guide
Check: Instructor observes each student at each machine using a three-machine safety and accuracy checklist; all critical safety behaviors must be satisfactory; ripped width within 1/32 inch, miter joint gap less than 1/32 inch, jointed face flat within 1/32 inch per foot.

Practice check8

Answer each question, then check it. Nothing is recorded; this is your own practice.

Tools, Equipment, and Machinery Safety
1. What is the primary purpose of the riving knife (splitter) on a table saw?
Safety and Health
2. Before changing a table saw blade, which action must be taken first according to OSHA lockout/tagout requirements?
Safety and Health
3. When ripping a 4-inch-wide strip on the table saw, where should the operator stand?
Tools, Equipment, and Machinery Safety
4. You are face-jointing a cupped board on a 6-inch jointer. Which face should be placed down on the infeed table first?
Measurement and Layout
5. After completing four 45° miter cuts for a corner joint, you test the assembly dry and check the gap with a feeler gauge. The 0.040-inch blade slides in easily. What should you do?
Tools, Equipment, and Machinery Safety
6. The outfeed table on a jointer must be set at what height relative to the cutterhead?
Measurement and Layout
7. A student sets the compound miter saw positive stop to 45° and makes four miter cuts. Before cutting the actual molding stock, what verification step should be taken?
Measurement and Layout
8. A ripped piece measures 3.562 inches when the target is 3.500 inches. Approximately how far, and in which direction, should the rip fence be moved to correct the dimension?
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