Working model rocket of the original Cosmostrator by mech-G. Added removeable tail cone to insert a rocket engine, includes engine mount in the base. Added nose cone parachute bar. Added built in launch guide. Reworked balance, thinned area's. Increased size to (just) fit on a 220x220 printer bed.

Large print weighs in at 168 grams. Uses an 18mm C11-3 rocket engine, if you weigh in more than 170 grams then you'll have to redo the base for use with a D size engine.

I haven't tried using the lightweight PLA (eg 'foaming') yet, but that might be a next step to get the final large print lighter.

Use mouse-ears or tabs for the small fins to prevent shifting during print.