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carpentry level 2 > line C-2 use portable power tools > Flashcards

line C-2 use portable power tools Flashcards

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1
Q

at what speed does the fastener move in low- velocity

A

under 100m/s

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2
Q

what component does a low- velocity tool have that is not found in high - velocity tool

A

piston

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2
Q

name 3 safety features of the low velocity powdered actuated tool

A

must be within 7 degrees
2 actions needed before it can fire
captive piston

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2
Q

when the powder actuated tool is fired , the piston travels down the barrel to strike the fastener like a hammer , what is the type of propulsion called ?

A

impact

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2
Q

what is the method of contact propulsion ?

A

the piston is in contact with the fastener which in turn is in contact with the work surface

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3
Q

what kind of propulsion is it called when the piston and the fastener are not in contact with the work surface

A

co-acting

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4
Q

what is medium velocity and its speed

A

when fired , the fastening pin travels 100-150 meters per second

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5
Q

what is low velocity and its speed

A

a powder actuated tool that contains a captive piston , less than 100meters per second

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6
Q

what is high velocity and its speeds

A

they have no pistons and the fastening pin is discharged at a higher velocity greater then 150 meters per second …. speeds of 460 meters per second is not unusual

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7
Q

for brass case ( low-velocity) what is the order from strongest to weakest in color and number

A

grey 1
brown 2
green 3
yellow 4
red 5 ( most common)
purple 6

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8
Q

for nickel case ( high-velocity) what is the weakest to strongest from color and number

A

grey 7
brown8
green 9
yellow10
red 11
purple 12

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9
Q

What are the 2 different types of cartridges and the way the are fired

A

crippled and wadded
center fire and rim fire

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10
Q

what are 3 types of fasteners for powder actuated tools

A

threaded , headed and eyelet

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11
Q

when designing fasteners what are the 3 rules manufactures must follow ?

A

the piston must match the fastener

the fastener washer guide must fit snuggly in the barrel

the proper cartridge must be used

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12
Q

when selecting fasteners consider the following what ?

A

the type of material to be penetrated and the amount of penetration required

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13
Q

why would you use additional washers

A

to prevent shearing of soft material on steel , concrete

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14
Q

what are 3 examples of requirements for fastening to concrete or concrete block

A

concrete cannot be less then 3’’ (75mm) thick

fastening must be 3’‘(75mm) away from edge of concrete

do not fasten into horizontal or vertical mortar joints of concrete

fastenings should be spaced no closer than 3’’ ( 75mm)

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15
Q

what are 2 situations to avoid when using a powder actuated tool

A

do not fasten into spalled areas

do not fasten into pre cast concrete beams or slabs containing pre stressed cables

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16
Q

what are 3 things to consider when using a powder actuated tool into steel

A

-fastners must be at least 13mm(1/2’’) away from edge of steel
- fasteners should be installed at least 25mm(1’’) apart
- steel must be at least 5mm (1/4’’) thick

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17
Q

what are 4 basic types of chainsaws

A

gasoline powered
electric
battery powered
pneumatic

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18
Q

what are common chainsaw hazards

A

kickback
chain cuts
noise
vibration
exhaust fumes
chain breaks

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19
Q

what dcbs do chainsaws cut at

A

90 and 120

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20
Q

what are 3 cutting techniques for chain saws

A

top cut
under cut
plunge cut

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21
Q

before you start cutting with a chainsaw what should you consider and check for

A

for cracks
loose bolts
excessive wear

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22
Q

what are common uses of a chainsaw in construction

A

timber framing
demolition
cutting rough openings

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23
Q

what do chainsaws emit the most

A

carbon monoxide

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24
Q

name 2 safety devices that help prevent injuries resulting from chain breaks

A

rear hand guard
chain catcher

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25
Q

what is the only accepted method of starting a chainsaw

A

with the saw on the ground

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26
Q

what is the easiest and safest cut

A

top cut

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27
Q

when undercutting the natural tendency of the saw is to

A

push away from the wood

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28
Q

which cut is the hardest and most dangerous

A

plunge cut

29
Q

to properly adjust the chain tension the guide bar must be ?

A

slightly slack

30
Q

what are hammer drills capable of drilling , think diameter

A

20mm or ( 3/4’’)

31
Q

what is the difference between a hammer drill and a rotary hammer drill

A

the action is delivered by a piston like device and delivers a blow about 10x harder than a hammer drill

32
Q

what diameter can rotary hammer drills get to

A

50mm ( 2’’)

33
Q

what are demo hammers sometime referred to as ?

A

breakers or jack hammers

34
Q

what are 3 types of cut off saws

A

handheld
benchtop
walk behind

35
Q

what are most handheld saws powered by ?

A

gasoline

36
Q

what are common uses of a handheld cut off saw

A

control joints
cutting concrete
asphalt

37
Q

what are benchtop cut off saws commonly referred to as ?

A

chop saws

38
Q

what are some of the uses of a walk behind cut off saw

A

cutting concrete or asphalt

39
Q

can walk behind cut off saw cut as deep as 8’’ ?

A

yes

40
Q

what are the 2 types of blades used for cut off saws

A

abrasive disks and superabrasive blades

41
Q

what are the sizes for many handheld and metal cutting saws

A

14’’ or 16’’

42
Q

describe the two difference between abrasive and superabrasive

A

abrasive is made up of composite material
super abrasive is made of diamond impregnated , cubic doron

43
Q

name 2 types ferrous metals

A

steel and iron

44
Q

what are 3 types of metals grinding / cutting disks use with angle grinders

A

ferrous metals
non- ferrous metal wheels
cut off wheels

45
Q

what do the following contain ferrous metals , non-ferrous metals , cut off wheels

A

ferrous - cast iron , steel

non-ferrous- brass copper aluminum

cut off wheels - zip disks

46
Q

what does the rpm of router run at commonly

A

20-30,000 rpm

47
Q

what are the 2 types of routers a there is a 3rd what is it

A

standard and plunge router laminate trimmer

48
Q

what are the 2 factors the determine the size of a router

A

the horsepower of the motor and the max shank diameter of the bit

49
Q

what is a collet

A

is a tapered metal piece that is split

50
Q

what are 6 types of router bits

A

chamfer
dove tail
flush cut
laminate
ogee
cove

51
Q

how often should the brushes be checked

A

every 50 hrs

52
Q

how does a collet work

A

compresses on bit

53
Q

how do you measure the cutting depth of a bit

A

distance between cutting edge to outside of bearing

54
Q

what type of sander is used for sanding the edge of a wood floor

A

disk sander

55
Q

what type of sander is used to fit a preformed countertop

A

belt sander

56
Q

list 5 types of sanders

A

disk
belt
orbital
random orbital
oscillating

57
Q

what motion should be used with the belt sander

A

oval with the grain

58
Q

what is the main advantage of a orbital sander

A

No specialty paper is needed , uses 1/4 or 1/2 sheets of standard 9’‘x11’’ sand paper

59
Q

how many different grits of sandpaper are usually required for finishing

A

3
course, medium, final

60
Q

what are 3 toxic sanding dusts

A

yew , redwood, cedar

61
Q

how deep should the cut be when planing a board that is the full width of the plane blade

A

shallow cuts

62
Q

what is the position of the cutting knife in relation to the planes shoe

A

cutting knife should just touch straight edge when it rests evenly on rear base/ outfeed

63
Q

describe how to plane wood with mixed grain

A

shallow cuts

64
Q

how wide to handheld power planes get to

A

3 1/4

65
Q

what fastening system is a biscuit joint similar to

A

dowel

66
Q

when edge joining where should the biscuit be located

A

slightly off center

67
Q

What should be done to determine if the material is suitable for a powder actuated tool

A

Do a test with a fastener to be used fastener as a centre punch

68
Q

How far must you stay away from a torch or weld when using a powder actuated tool

A

50mm

69
Q

Which tools use a 2”-6” coring bit

A

Rotary hammer drills

70
Q

What’s the main difference between abrasive and super abrasive blades

A

Super abrasive creates less dust

71
Q

Which stationary power tool is a portable power planer similar to

A

A Jointer

72
Q

When installing sharpening knives what is considered correct

A

The depth adjustment must be at zero

73
Q

How can you adjust the depth of a cut for different size biscuits when using a biscuit jointer

A

Depth adjustment knob

carpentry level 2 (11 decks)

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