Mechanical Division
Standard Hand Tools
Topics
T-Square
Drafting Triangle
Caliper
Fabrication
Hacksaw
Cordless Drill
File
Sandpaper & Steel Wool
Assembly
Allen Key
Wrench & Adjustable Wrench
Screwdriver
Ratchet
MVRT115
Design
Design
T-Square
Used in conjunction with drafting board and triangle
Examples of t-squares used in the art department
MVRT115
Allows drawing of horizontal lines
Keep your T-Square clean and check to make sure it
is straight
Drafting Triangle
Keep your triangle clean
Keep your triangle clean
MVRT115
Used by sliding on top of T-Square
Allows drawing of vertical lines
Caliper
Measures up to ten-thousandths (0.001) of an inch
Useful for measuring shaft and hole diameters
A set of calipers similar to ours
MVRT115
Used for precision measuring of thickness and diameter
Fabrication
Hacksaw
Angle downward for ease of cutting
Watch table edge and corner
Be careful not to damage the blade
A high tension hacksaw similar to ours
MVRT115
Useful for cutting down long bolts & PVC
Long smooth cuts versus short rapid spasms
Cordless Drill
Useful for drilling holes or tightening/loosening screws
MVRT115
Use only when accuracy is not an issue
Do not completely discharge the battery; it shortens its average life
span
Avoid having to drill aluminum
Don’t even try to drill steel
Avoid over-tightening screws
Try not to wear out screw heads
A standard cordless drill
Click to continue
File
Absolutely not for precision parts
File perpendicular to the teeth and away from yourself in
smooth strokes
Use only on wood, Plastic, and aluminum
Stay away from steel
Can be used as an alternative to the de-burring tool
for de-burring
Click to continue
A typical file
MVRT115
Effective at “making stuff fit together” by grinding down
edges
Sandpaper & Steel Wool
A step down from the file in terms of grinding power
Use appropriate grit for material and amount to sand
down
Higher grit = finer sand
Generally use low (60-100) grit to start out wood and
plastic
Use medium (120-180) grit for working wood,
plastic, and grinding aluminum
High (220+) grit for finishing wood, plastic, and light
work on aluminum
Continued on Next slide
MVRT115
Absolutely not for precision parts
Sandpaper & Steel Wool
MVRT115
Steel wool is excellent for “persuading” shafts and
other slightly-too-big parts to fit
Beware of the steel dust that falls off when polishing; they
will make electrical unhappy!
Various grades of sandpaper
Rolls of steel wool
Assembly
Wrenches and A. Wrenches
Alternative to ratchet when space is an issue
Use appropriate measuring system (metric or
English/standard/whatever) to avoid wearing
down nuts and bolt heads
Avoid using the adjustable wrench when possible;
slippage causes wearing on the bolt heads and nuts
Click to continue
A Wrench
An Adjustable Wrench
MVRT115
Generally used in pairs to tighten bolts and nuts
Allen Keys
Comes in two flavors; Metric and
English/Standard/Whatever
The ball-shaped end allows easy insertion to start off
tightening
The flat end has greater potential for tightening
torque due to long handle
Replace Allen keys in proper sets
Your everyday set of allen
keys
MVRT115
Used to tighten and loosen socket-head bolts and screws
Screwdriver
Slot, or commonly known as flat, is used for slot
head screws
Phillips is used for Phillips head screws
Wider-diameter Phillips screwdrivers generally have
flatter tips
MVRT115
Used to tighten and loosen Slot and Phillips head screws
Use proper judgment when selecting a screwdriver to avoid
unnecessary head wearing
A screwdriver
Click to continue
Ratchet
Used to tighten and loosen Hex head bolts
Fast and easy way to loosen and tighten bolts
Socket heads come in metric and
English/standard/whatever
MVRT115
Generally used in conjunction with a wrench on the
nut/bolt head
Use proper judgment when selecting a socket head to
avoid wearing
To change socket heads, press and hold the release button
on the back of the ratchet head
Continued on Next slide
Ratchet
Ensure the ratchet stop is set in the proper direction
To change rotational direction, flip the switch on the
back of the ratchet head to the other side of the head
Remember to replace socket heads in their proper
locations
Some ratchet
Click to continue
MVRT115
Then remove the socket, fit the new socket head on
completely, and release the release button