Cat

erp

illar

Maa

rten

van

Gel

der

1

984

Dec

Use

a s

trip

of p

aper

8 x

1 (

24 x

3 in

ch o

r 20

x 2

.5 in

ch w

ill d

o),

both

sid

es s

ame

colo

r. S

hort

er th

an 8

x 1

is p

ossi

ble,

but

not

as

nice

.Y

ou m

ay fi

rst t

ry w

ith a

str

ip o

f 3 x

1. T

he d

iagr

ams

are

draw

n as

if fo

lded

of

a 3

x 1

strip

. Onl

y th

e fin

ishe

d m

odel

is d

raw

n as

if fo

lded

from

a 8

x 1

str

ip.

12

34

56

XY

PQRST

7R

ever

se fo

ldw

hole

leng

th

XY

PQRST

AB

CD

8R

ever

se fo

ld: a

ll tip

s

XY

PQRS

AB

CD

9U

nfol

d fr

ont f

lap.

See

10,

11

and

also

finis

hed

mod

el fo

r po

sitio

n of

poin

ts P

, Q, R

and

S

X

S

PQ

ABC

D

10

ABC

D

11

S

12O

nly

uppe

r fla

p; d

on’t

push

flat

Poi

nt S

sw

ivel

s au

tom

atic

ally

S

13F

old

the

flaps

bac

k to

diag

ram

10

and

repe

at11

-13

on th

e rig

ht s

ide

14O

utsi

de r

ever

se fo

ld

15O

utsi

de r

ever

se fo

ld16

17

1819

Rep

eat 1

3 an

d 14

20

2122

Fol

d he

ad d

own

Rev

erse

fold

in ’n

ose’