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carpentry level 2 > line C-3 stationary tools > Flashcards

line C-3 stationary tools Flashcards

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1
Q

what can jointers do ?

A

remove warp and twist from a board and dress it flat and true

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2
Q

what kind of cuts can a jointer perform

A

rabbet
taper
bevel
chamfer stock

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2
Q

what are some similar parts that jointers have in common

A

heavy base
front infeed table
adjustable fence

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3
Q

what is the infeed table made of on a jointer

A

machined cast iron

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4
Q

what do you sharpen the cutter knives with on a jointer and why ?

A

with a stone because the high speed steel in a jointer knife is too hard for a file

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5
Q

how do you determine the size of a jointer

A

the length of the knives in the cutter head

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6
Q

what are the common sizes ?

A

150mm - 200mm

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7
Q

what is a snipe

A

a distinct change in thickness that occurs at the end of a board

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8
Q

what causes a snipe

A

having the outfeed table set too low

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9
Q

what are the safe operations for using a jointer ?

A

eye protection

keep hands away from cutter

use a push block if too small

stand to one side of the direction of the cut

hearing protection

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10
Q

the outfeed table of the jointer must be set to exactly match the height of the ?

A

knives / cutters

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11
Q

lumber that is bowed across its width must be jointed with the cupped side ?

A

down

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12
Q

with which part of the jointer must the stock make full contact if you want a straight cut ?

A

outfeed

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13
Q

when should you slow your rate of feed into the jointer ?

A

when you plane the width of the board

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14
Q

what adjustment must you make to the jointer fence in order to cut a chamfer

A

tilted

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15
Q

what is a thickness planers 1 task ?

A

it dresses lumber to a uniform thickness

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16
Q

what is the rotation speed of the knives in the cutter head

A

4000- 20,000 RPM

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17
Q

what do the upper infeed roller and upper outfeed roller have in common

A

both are under power and spring loaded

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18
Q

what are the two lower rollers for the infeed and out feed

A

may be idlers or they may be under power

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19
Q

what is the lower rollers purpose

A

prevent lumber from dragging too heavily on the table

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20
Q

what is the purpose of the pressure bar

A

prevent chattering

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21
Q

what is the chip breakers purpose

A

prevent knives from tearing long slivers from the wood

22
Q

what do most planers have a rate of speed of ?

A

16-20 feet per minute

23
Q

what are 3 rules for using a planer

A

must be planed with the grain not against

no more than 3mm taken off at a time

stock should at least be wide as it is thick

24
Q

what control on a thickness planer sets thickness the lumber will be after it has been planed

A

elevating wheel and lock

25
Q

what is the advantage of segmented infeed rollers in a thickness planer

A

arrow for different thickness’s to be planed at the same time

26
Q

what should you do to remove dirt pitch and gum from surface of a thickness planer

A

use petroleum based solvents

27
Q

what is a belt sander commonly called

A

finishing sander

28
Q

what is a belt sanders use

A

for final sanding of straight stock

29
Q

what are the 8 main parts of a belt sander

A

tracking guide knob
belt tension adjustment
stop block
rollers
spindle table inserts
sanding spindles
on/off
adjustable table

30
Q

what do wide belt sanders range from

A

15’’ to 36’’

31
Q

what are wide belt sanders commonly used for

A

furiture
cabinet
door manufacturing

32
Q

what are the 4 common manufactured abrasives

A

aluminum oxide
silicon carbide
ceramic
alumina zirconia

33
Q

what is the grit for aluminum oxide

A

24-400

34
Q

what is the grit for silicon carbide

A

24-600

35
Q

what is the grit for ceramic

A

24-120

36
Q

what is the grit for alumina zirconia

A

24-120

37
Q

what are abrasive backing composed of

A

paper ,cloth and fibre

38
Q

what is open coat

A

abrasive materials that cover only 50%-70% of the backings surface

39
Q

what is closed-coat

A

the grains cover the entire surface

40
Q

what is coarse grit

A

sandpaper used in carpentry has a grit number of 50 or less

41
Q

what is medium grit

A

grits of 60,80 and 100 or more remove machine marks on wood

42
Q

what is fine grit

A

grits of 120,150 and 180 and more used for final stage of sanding before staining

43
Q

what is very fine grit

A

grits from 220 to 600 are used for polishing and after coats of staining

44
Q

what sander is best for sanding internal curves

A

belt sander

45
Q

which is considered a finishing sander belt or disk and why

A

belt sander , disk will leave scratch marks

46
Q

what sander is used for true edgers of a circle cut from wood

A

disk sander

47
Q

which sander is used for removing end grain

A

disk sander

48
Q

what is the function of a platen

A

keep surface flat

49
Q

why can a belt sander cause kick back

A

torn or ripped paper

50
Q

when sanding long stock on a belt sander the stuck must be kept?

A

midpoint and platen

51
Q

when sanding short stock with a belt sander is best done with the help of a ?

A

backstop

52
Q

what are 2 advantages of open coat sandpaper

A

flexibility and less clogging

53
Q

what are 2 advantages of closed coat sandpaper have over open coat

A

faster and longer life span

carpentry level 2 (11 decks)

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