Unit of Competency CPCCCA2002A Use carpentry tools and equipment

ELEMENT 2Identify and select hand, power and pneumatic tools

Element 3Use tools

Performance criteria 2.1 Hand, power and pneumatic tools, their functions, operations and limitations are identified and selected.Performance criteria 3.1 Hand tools used are appropriate to the task and materials are in accordance with OHS requirements

Hand Saws, Identification and application, Part 1 Theory

• The teeth on saws are classified by the number of teeth points along a 25.4mm (1 inch) cutting edge, including those at each end.

• The number is referred to as so many points, the point size is one greater than the teeth per inch (tpi).

Other considerations• Set of teeth

• The right saw for the right application/ task

• Framing Saws

• Finishing Saws

• Maintenance

Framing sawsCross Cut Saw• Saws for cross cutting or cutting across the grain have teeth set in a

wide alternating bevel.

• This creates shearing action to slice through the wood fibres leaving a kerf wider than the saw body so there is no binding.

• The number of teeth per inch ranges from 8 to 12• • Lengths of saws range from 55 to 70cm. These saws cut on the push

stroke.

Rip saws • Are used for cutting with the grain of the wood.• The front of the teeth are generally at right angles to the

blade and pitched at between 85 and 90 degrees to the blade.

• A rip saw cuts very aggressively. • Will produce a very ragged cut if used across the grain. • They cut on the push stroke.• The number of teeth per inch is usually 5.5 to 7. • Saw lengths are generally from 60 to 70cm.

Finishing SawsPanel Saw• Usually shorter than regular cross cut saws, for easy

portability. They are primarily used for cutting thin wood and for the larger joints.

• Teeth per inch range from 8 to 12 and the length is usually from 45 to 60cm. Cuts on the push stroke.

Tenon Saw• A larger saw (300-350mm) with coarser (10-12 tpi)

teeth, used for rougher joinery work like cutting tenon cheeks.

Fret Saw• These saws have small metal frames with very thin

blades held in place by a clamping system. • The frame itself often has one fixed arm and one

adjustable arm with a throat depth of up to 450mm.• The number of teeth per inch varies from 20 up to

46 tpi for metal cutting and from 7 to 33 tpi for wood. Cuts on the pull stroke.

Coping Saw• These are similar to the fret saws but are slightly

larger and are designed for more robust cutting of intricate curves and shapes in wood.

• The frame of the coping saw is made from sprung steel and is equipped with a small turned wood or plastic handle which when turned tightens the blade.

• Blades normally range from 7 to 20 tpi. Normally cuts on the pull stroke.

Maintenance• Protecting the edge

• Protecting the surface

• Storage

Unit of Competency CPCCCA2002A Use carpentry tools and equipment

ELEMENT 2Identify and select hand, power and pneumatic tools

Element 3Use tools

• Performance criteria 2.1 Hand, power and pneumatic tools, their functions, operations and limitations are identified and selected.

• Performance criteria 3.1 Hand tools used are appropriate to the task and materials are in accordance with OHS requirements

Hand Saws, Identification and application, Part 2 Assessment

Instructions to candidate

• Make certain you write your name clearly on the attached question sheet.

• You are required to answer the following multiple choice questions by circling the letter that corresponds to your choice of answer.

• Take time to read the question and the possible answers carefully.

Instruction to Candidates

• Please use pencils provided and use the rubber to erase any incorrect answers.

• Please use discretion, do not copy another person’s answers, and do not allow your answers to be copied.

• When you are finished raise your hand

•Question sheet

•Answer sheet

• Assessment and feedback