Shut up or i will replace you by a simple (perl) script

#!/bin/bash

model=$1

mkdir $model
cd $model

i=1
while $( printf "wget http://lego.brickinstructions.com/08000/$model/%03d.jpg" $i ); 
do
        ((i++))
done

convert *.jpg $model.pdf

cd ..

echo done  $model/$model.pdf