Considering how all those Dagobah sets were built up high on scafolding to accomodate Frank Oz, and the other puppeteers working underneath, I always assumed the close up of the 'helmet-opens-to-reveal-the-face-of-Luke' shot was done the same way as the cheezy old Halloween 'live-head-on-a-platter' gag.
Maybe I'm totally wrong, but it would work like this: Back of the helmet gets cut away, the neck opening is stuffed with gore. Mark pokes his head up through a hole from under a section of floor, tilts his neck back to the right angle, while the gutted helmet is placed over him, someone yells action, and he freezes for the camera, as the guy with smoke machine trys get out of frame.
They do terrible things to props on set. Only maniacs like us
would regard hacking the back off a Vader helmet as sacrileage.
I'd bet it was tossed in the garbage at the end of the day.
My "hat" is off to anyone who does this as a display.
Consider adding some of the ROTJ interior detail.
<div class='quotetop'>QUOTE(GINO @ Mar 9 2007, 05:57 PM) [snapback]1435838[/snapback]</div>
Actually it was in the helmet as it fell to the ground if I recall correctly. [/b]
Also the helmet doesn't 'explode' to reveal the face until after if falls.
It drops... rolls to a stop, and then goes POOF. For a brief second we see the
dummy head, they cut to a reaction shot from 'Luke', then back to the
'beauty shot' of Mark's impression of a wall-eyed pike in a black bowl.
jonny5