Hand and Power Tool Use and Maintenance
This domain tests safe technique and shop-level maintenance for the tools a cabinetmaker uses every day - planes, chisels, saws, routers, drills, biscuit joiners and nailers. Questions ask what is wrong with a cut, why a tool is performing poorly, and what maintenance or adjustment resolves it.
Hand tools
- Chisels are ground at about 25 degrees with a small micro-bevel; plane irons typically 25 to 30 degrees, honed flat and polished on the back.
- Rip teeth are filed square across with a raker or flat top; crosscut teeth are filed with fleam so they slice fibres. Wrong file, wrong cut.
- Set on a hand saw should be even; a saw with uneven set wanders.
- A cabinet scraper, freshly burnished with a fine hook, removes tear-out that sanding only burnishes.
Power tools
- Circular saw: set depth so the teeth just clear the stock (about 3 to 6 mm of blade below the work), use the correct blade for rip or crosscut, and keep the offcut side supported to avoid binding.
- Router: feed against the rotation for a conventional cut; climb cutting is for light finishing passes with a fence and full control.
- Respect the cutter's rated rpm - a large-diameter bit run too fast is a fragmentation hazard.
- Nailers: never disable the contact or sequential trip safety, never point at a person, and disconnect air before clearing a jam.
Maintenance and inspection
- Inspect cords and plugs, use GFCI protection, replace damaged leads rather than taping them.
- Clean pitch from blades with a proper solvent, check for missing teeth and cracks, and torque arbor nuts.
- Check carbon brushes, guards and return springs; a guard that does not snap back is out of service.
- Keep cutters sharp - dull tooling raises feed force, which is what causes kickback.
Worked example
A circular saw burns its way along a rip and the cut wanders off the line. Reasoning: burning means heat from friction, so the first suspect is a dull or pitch-clogged blade. Second, tooth geometry - a fine crosscut blade used for ripping clears chips poorly. Third, the blade may be dull on one side, or the fence may be flexing. Correct order: clean and sharpen or change to a rip blade, verify the blade is square to the base, then re-check the fence and support. Changing technique first would hide the real problem.
Traps that cost marks
- Wearing gloves at a drill press, table saw or router.
- Using a crosscut blade for heavy ripping, then blaming the saw.
- Reaching over a running blade or clearing chips by hand.
- Assuming a guard removed for a special cut can stay off.