All credit for this rocket should go to pudi.dk as his "ultimate straw rocket" gave me the idea for this one.
This is my first instructable, be as harsh as you see fit, all criticism is welcome but do be fair.
Step 1: Materials and tools
skinny straws(not flexy straws).
larger straws(still not flexy).
hot glue gun sticks.
a BIC pen.
A foot pump.
A pair of scissors.
a skewer (for dismantling the pen).
Step 2: Destroying the pen.
Step 3: Making the launcher!!
Get your glue gun going and put glue around the hole where the straw goes in to make sure it cant come out( this is shown in the really bad photo below) MAKE SURE YOU DO NOT COVER THE UND OF THE STRAW!!!!!!!!!!! only put a little bit of glue around so that it dousnt pop out when you launch it.