MIT Guide to Lock Picking by Ted the Tool - HTML preview

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Chapter

10

Final

Remarks

Lo ck

picking

is

a

craft,

not

a

science.

This

do cument

presents

the

knowledge

and

skills

that

are

essen

tial

to

lo

c

k

picking,

but

more

imp ortantly

it

provides

y

ou

with

mo

dels

and

exercises

that

will

help

y

ou

study

lo

c

ks

on

y

our

o

wn.

T

o

excel

at

lo

c

k

picking,

you

m

ust

practice

and

develop

a

style

which

ts

you

p ersonally

.

Remem

b er

that

the

b est

technique

is

the

one

that

works

b est

for

y

ou.

42

App

endix

A

T

o

ols

This

app

endix

describ es

the

design

and

construction

of

lo ck

picking

to ols.

A.1

Pic

k

Shap

es

Picks

come

in

sev

eral

shap es

and

sizes.

Figure

A.1

shows

the

most

common

shap

es.

The

handle

and

tang

of

a

pick

are

the

same

for

all

picks.

The

handle

m

ust

b e

comfortable

and

the

tang

m

ust

b

e

thin

enough

to

av

oid

bumping

pins

unnecessarily

.

If

the

tang

is

to o

thin,

then

it

will

act

lik

e

a

spring

and

y

ou

will

lo ose

the

feel

of

the

tip

in

teracting

with

the

pins.

The

shap e

of

the

tip

determines

how

easily

the

pick

passes

ov

er

the

pins

and

what

kind

of

feedback

you

get

from

each

pin.

The

design

of

a

tip

is

a

compromise

b etw

een

ease

of

insertion,

ease

of

withdra

w

al

and

feel

of

the

interaction.

The

half

diamond

tip

with

shallow

angles

is

easy

to

insert

and

remov

e,

so

you

can

apply

pressure

when

the

pick

is

moving

in

either

direction.

It

can

quickly

pic

k

a

lo ck

that

has

little

v

ariation

in

the

lengths

of

the

k

ey

pins.

If

the

lo ck

requires

a

k

ey

that

has

a

deep

cut

b etw

een

tw

o

shallow

cuts,

the

pick

may

not

b

e

able

to

push

the

middle

pin

down

far

enough.

The

half

diamond

pic

k

with

steep

angles

could

deal

with

such

a

lo ck,

and

in

general

steep

angles

give

you

b etter

feedback

ab

out

the

pins.

Unfortunately

,

the

steep

angles

make

it

harder

to

mov

e

the

pic

k

in

the

lo ck.

A

tip

that

has

a

shallo

w

fron

t

angle

and

a

steep

bac

k

angle

w

orks

w

ell

for

Y

ale

lo cks.

The

half

round

tip

works

well

in

disk

tumbler

lo cks.

See

section

9.13.

The

full

diamond

and

full

round

tips

are

useful

for

lo cks

that

hav

e

pins

at

the

top

and

b

ottom

of

the

keyw

a

y

.

The

rak

e

tip

is

designed

for

picking

pins

one

by

one.

It

can

also

b

e

used

to

rake

o

v

er

the

pins,

but

the

pressure

can

only

b e

applied

as

the

pick

is

withdra

wn.

The

rak

e

tip

allows

you

to

carefully

feel

each

pin

and

apply

v

arying

amoun

ts

of

pressure.

Some

rak

e

tips

are

at

or

den

ted

on

the

top

to

mak

es

it

easier

to

align

the

pick

on

the

pin.

The

primary

b

enet

of

picking

pins

one

at

a

time

is

that

you

av

oid

scratching

the

pins.

Scrubbing

scratches

the

tips

of

the

pins

and

the

keyw

a

y

,

and

it

spreads

metal

dust

throughout

the

lo

c

k.

If

you

w

an

t

to

av

oid

lea

ving

traces,

you

must

a

v

oid

scrubbing.

The

snak

e

tip

can

b

e

used

for

scrubbing

or

pic

king.

When

scrubbing,

the

multiple

bumps

43

generate

more

action

than

a

regular

pick.

The

snak

e

tip

is

particularly

go o

d

at

op ening

ve

pin

household

lo cks.

When

a

snake

tip

is

used

for

picking,

it

can

set

t

w

o

or

three

pins

at

once.

Basically

,

the

snake

pick

acts

like

a

segmen

t

of

a

key

whic

h

can

b

e

adjusted

by

lifting

and

low

ering

the

tip,

by

tilting

it

bac

k

and

forth,

and

by

using

either

to

top

or

b ottom

of

the

tip.

Y

ou

should

use

mo

derate

to

heavy

torque

with

a

snake

pick

to

allow

several

pins

to

bind

at

the

same

time.

This

style

of

pic

king

is

faster

than

using

a

rake

and

it

leav

es

as

little

evidence.

A.2

Street

cleaner

bristles

The

spring

steel

bristles

used

on

street

cleaners

make

excellent

to ols

for

lo ck

picking.

The

bristles

hav

e

the

right

thickness

and

width,

and

they

are

easy

to

grind

into

the

desired

shap e.

The

resulting

to ols

are

springy

and

strong.

Section

A.3

describ es

how

to

make

to

ols

that

are

less

springy

.

The

rst

step

in

making

to

ols

is

to

sand

o

any

rust

on

the

bristles.

Course

grit

sand

pap er

works

ne

as

do es

a

steel

wool

cleaning

pad

(not

copp er

wool).

If

the

edges

or

tip

of

the

bristle

are

w

orn

do

wn,

use

a

le

to

mak

e

them

square.

A

torque

wrench

has

a

head

and

a

handle

as

shown

in

gure

A.2.

The

head

is

usually

1/2

to

3/4

of

an

inch

long

and

the

handle

v

aries

from

2

to

4

inc

hes

long.

The

head

and

the

handle

are

separated

by

a

b

end

that

is

ab

out

80

degrees.

The

head

m

ust

b

e

long

enough

to

reac

h

o

v

er

an

y

protrusions

(such

as

a

grip-pro of

collar)

and

rmly

engage

the

plug.

A

long

handle

allo

ws

delicate

control

o

v

er

the

torque,

but

if

it

is

to o

long,

it

will

bump

against

the

do orframe.

The

handle,

head

and

b end

angle

can

b e

made

quite

small

if

you

wan

t

to

make

to ols

that

are

easy

to

conceal

(e.g.,

in

a

p

en,

ashlight,

or

b elt

buckle).

Some

torque

wrenches

ha

v

e

a

90

degree

twist

in

the

handle.

The

twist

makes

it

easy

to

con

trol

the

torque

by

controlling

ho

w

far

the

handle

has

b een

de ected

from

its

rest

p osition.

The

handle

acts

as

a

spring

which

sets

the

torque.

The

disadv

an

tage

of

this

metho

d

of

setting

the

torque

is

that

y

ou

get

less

feedback

ab out

the

rotation

of

the

plug.

T

o

pick

dicult

lo

c

ks

you

will

need

to

learn

ho

w

to

apply

a

steady

torque

via

a

sti

handled

torque

wrench.

The

width

of

the

head

of

a

torque

wrench

determines

ho

w

well

it

will

t

the

keyw

a

y

.

Lo cks

with

narro

w

keyw

a

ys

(e.g.,

desk

lo cks)

need

torque

wrenches

with

narrow

heads.

Before

b ending

the

bristle,

le

the

head

to

the

desired

width.

A

general

purp

ose

wrench

can

b e

made

b

y

narrowing

the

tip

(ab out

1/4

inc

h)

of

the

head.

The

tip

ts

small

k

eyw

a

ys