Power Tools Objectives Identify power tools commonly used

Power Tools

Objectives � Identify power tools commonly used in construction � Use power tools safely � Explain how to maintain power tools properly

Power Tools � Used to make holes; cut, smooth and shape materials; and even demolish pavement. � Power Tools are used in almost every construction trade. Your logo here

What Powers Tools? � Electric Tools – powered by electricity. Either alternating current (AC), such as a wall plug, or direct current (DC), such as a battery. Examples: Belt Sanders, Circular Saws

� Pneumatic Tools – powered by air. Electric or gas powered compressors produce air pressure used for pneumatic tools. Examples: Air Hammers, pneumatic nailers

� Hydraulic Tools – powered by fluid pressure. Hand or electric pumps are used to produce fluid pressure. Examples: Jack hammers, Porta-Powers https: //www. youtube. com/watch? v=yj. EDC 1 E 1 Cbc

Power Tool Safety One of the most important rules about working with power tools is to ALWAYS disconnect the power source for any tool before you replace parts such as bits, blades or discs. 2. Always disconnect power before performing maintenance on any power tool. 3. NEVER activate the trigger lock on any power tool. 4. To prevent electrical shock, power tools should only be operated with the proper GFCI or ground fault circuit interrupter. 1. Your logo here

Power Drills Types: � Electric � Cordless � Hammer � Electromagnetic � Pneumatic � Electric Screwdrivers

Parts of a Drill

Safety & Maintenance � � � � Always wear PPE Find out what is on the other side of the wall before you drill through it. Use the right bit for the job Always use a sharp bit Make sure the drill bit is tightened in the chuck before you start the drill. Drills do not need much maintenance but they should be kept clean. Keep the drill’s air vent clean with a small brush or small stick. Attach the chuck key to the power cord when you are not using the key, so it does not get lost.

Hammer Drill Has a pounding action that lets you drill into concrete, brick or tile. https: //www. youtube. com/watch? v=KUYany 6 -v. RY

Electromagnetic Drill Mounted on an electromagnetic base. Used for drilling thick metal. http: //www. youtube. com/watch? v=8 I 6 mq. P 6 V 2 Nc

Pneumatic Drill Also called an air hammer and powered by compressed air. https: //www. youtube. com/watch? v=tte. Ukn. Xz. S 8 I

Power Tools Saws, Grinders and Sanders

Saws � Circular � Saber � Reciprocating � Portable handheld band saws � Power miter box saws

Circular Saw

How to Use a Circular Saw 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Wear PPE Never use a circular saw that doesn’t have an upper blade guard because the guard protects you from touching the blade Properly secure material to be cut Make your cut mark Place front edge of baseplate on work so the guide notch is in line with the cut mark Adjust the blade depth to the thickness of the wood plus ¼” Start the saw. After the blade is at full speed, move the saw forward to start cutting. While cutting, grip the saw handles firmly with both hands. If the saw cuts off line, STOP, back out, and restart the cut. DO NOT FORCE THE SAW. As you get to the end of the cut, use the blade as your guide Release the trigger switch http: //www. youtube. com/watch? v=Qvc. CLIX 2 NK 8

Saber Saw Saber saws have very fine blades, which makes them ideal for doing delicate and intricate cuts.

Saber Saw Use 1. 2. 3. 4. 5. 6. 7. 8. Wear PPE Clamp the work to avoid excessive vibration Check to make sure use of proper blade Measure and mark work Before you plug the saw into a power source be sure the switch is in the OFF position. Rest the baseplate on the work. The blade should NOT be touching the work. Start saw and move the blade gently but firmly into the work. Continue feeding the blade into the work. DO NOT FORCE THE BLADE. When the cut is finished, release the trigger and let the blade come to a stop before removing it from the work http: //www. youtube. com/watch? v=UYt. AVnxqzk. A

Reciprocating Saw Designed for more heavy duty jobs and uses longer and tougher blades than the saber saw.

Reciprocating Saw Use 1. 2. 3. 4. 5. Wear PPE Clamp the work to avoid vibration Set the saw to the desired speed - Lower speeds for metal - Higher speeds for wood and soft materials Grip saw with both hands and place baseplate against work Squeeze trigger ON

Portable Band Saw Used for cutting pipe, plastics, wood and irregularly shaped materials.

Power Miter Box Combines a miter box with a circular saw, allowing it to make straight and miter cuts.

Power Miter Box Use Wear PPE 2. Be sure saw blade has reached maximum speed before starting cut 3. Hold the work piece firmly against the fence 4. Turn off the saw immediately after making the cut. 1. http: //www. youtube. com/watch? v=y. QSe. Nzaa 96 c

Grinders & Sanders � Angle grinders, end grinders, detail grinders � Bench grinders � Portable belt sanders � Orbital sanders

Angle Grinders These are grouped together because they are all handheld grinders. Angle Grinders (side grinder) � Used to grind away hard heavy materials such as plates or welds.

End Grinders Also called pencil grinders � Used to smooth the inside of materials such as pipe.

Detail Grinders � Use small attachments called points to smooth and polish intricate metal work.

Bench Grinder Electronically powered stationary grinding machines. They usually have two grinding wheels that are used for grinding, rust removal and metal buffing. There should be a distance of only 1/8 -inch between the tool rest and the wheel.

Portable Belt Sander Use continuous-loop abrasive belts stretched between two drums to remove rough areas from large, flat sections of wood; for trimming excess wood; and for stripping old finishes. http: //www. youtube. com/watch? v=Y 30 l 3 H 91 n. Pk https: //www. youtube. com/watch? v=Ko 4 j. IPLJ 81 U

Orbital Sander Used to create an even, smooth surface needed for painting or finishing of the material. http: //www. youtube. com/watch? v=c. GW 0 XKYe. M 6 o

Miscellaneous Power Tools � Pneumatically powered nail guns � Powder-actuated fastening systems � Air impact wrench � Pavement breaker � Hydraulic jack

Pneumatically Powered Nailers Pneumatic nail guns are commonplace on construction jobs. - Dramatically speed up installation of materials such as wallboard, molding, framing members and shingles

Using Pneumatic Nailers 1. 2. 3. 4. 5. 6. 7. 8. 9. Read the manufacturer’s instructions before using a pneumatic nailer. Keep the nailer oiled according to the manufacturer’s instructions. Add a few drops to the air inlet before each use Wear PPE Inspect nailer for damage or loose connections Load the nails If the nailer is not firing disconnect the air hose before attempting repairs Ensure hoses are connected properly Check for proper air pressure Hold nailer firmly against the material to be fastened. http: //www. youtube. com/watch? v=op. Qj. Rps. Om 5 U

Power-Actuated Fastening Systems Used for anchoring static loads to steel and concrete beams, walls or floors. A low velocity fastening system powered by gunpowder cartridges called boosters.

Using Power-Actuated Fastener 1. 2. 3. 4. 5. Wear appropriate PPE Feed the pin or stud into the piston Feed the gunpowder cartridge (booster) into position Position the tool in front of the item to be fastened and press it against the mounting surface Press the trigger handle to fire the charge. http: //www. youtube. com/watch? v=FL 52 Mul-f-8

Air Impact Wrench Powered pneumatically (compressed air) and used to fasten, tighten and loosen nuts and bolts.

Using Impact Wrenches Read manufacturer’s instructions Inspect the wrench for damage Select appropriate socket Connect the wrench to the air hose Turn on the air compressor Place the impact socket firmly against the material to be fastened, removed, or loosened and press the trigger 7. Keep your body stance balanced. 1. 2. 3. 4. 5. 6. http: //www. youtube. com/watch? v=bo. Yd. Jk. Dk. Y 6 c

Pavement Breaker Used for large scale demolition work such as tearing down brick and concrete walls and breaking up concrete or pavement.

Using a Pavement Breaker 1. 2. 3. 4. 5. Wear PPE Make sure the air pressure is shut off at the main air outlet Attach the air supply hose to the air drill Check to see if you have a good connection Once you have a good connection the pavement breaker is ready to use http: //www. youtube. com/watch? v=pw. Tp. Mh. CEni. Y

Hydraulic Jack Used to push heavy machinery and other heavy objects.

Using a Hydraulic Jack Wear PPE 2. Place the jack beneath the object to be lifted 3. Pump the handle down and then release it. This raises the cylinder 4. To lower the jack, open the return passage by turning the thumbscrew. 1. http: //www. youtube. com/watch? v=l. Oom 01 Ykm 4 Q