There’s also that picture of him with waiting for set to be prepped and the saber on the ground by his foot
I've been trying to find that one for two days! It may have been one of
Sym-Cha 's Photobucket gallery pics.
As for scenes proving the lightsaber's weight, those would all of the scenes in the movie where it's hooked to Obi-Wan's belt. Here, let me detail them for y'all...
39min 54sec = "Now wait Luke, it's too dangerous!" scene in front of blasted Jawa Sand Crawler. The lightsaber barely moves as Obi-Wan spins/steps forward, his tunic is blowing around but the lightsaber is dead still after Obi-Wan stops moving.
47min 23sec to 25sec = "I'm alright." scene in Cantina when Ben leans over to help Luke up off of the floor. The lightsaber points to the ground throughout the motion of Ben leaning forward and standing back upright. *****You could also make a point about seeing that the pommel cap is missing in this section of the scene!*****
52min 14sec to 24sec = "All right, give it to me. I'll take it. Ever since the XP-38 came out they just aren't in demand." scene in the alleyway selling Luke's speeder. Obi-Wan holds his robe closed with his left hand directly over where his lightsaber belt would be atop his sash/obi. His right hand crosses over and pulls on his robe, his left hand regathers atop the robe and his right hand adjusts the belt beneath the robe. Both hands continue to hold the robe closed and the belt up through the end of the scene. There are two instances of shadow in the folds of the robe during this scene where the lightsaber can be seen effecting the robe in front of it.
55min 30sec to 32sec = "Chewy! Get us out of here!" scene as Luke and Obi-Wan scramble through the Falcon to their seats. The lightsaber points straight to the ground even in a dash. And the belt is clearly bowed down in an arc from the weight of the lightsaber.
59min 12sec to 23sec = "Are you alright?" scene as Obi-Wan reels from the Great Disturbance in the Force. The lightsaber moves once from a bump against Obi-Wan's leg and resettles quickly in its pointing at the ground position as it continues to pull down on Obi-Wan's belt.
1hr 7min 36sec = "Who's more foolish, the fool, or the fool who follows him?" scene. Obi-Wan's lightsaber is so heavy he can't even push himself up out of the smuggling compartment! HA!!!
1hr 8min 52sec = "Take over. We got a bad tranmitter, I'll see what I can do." scene. Obi-Wan's right hand is holding up his belt and his left hand is atop the pommel. The weight of the lightsaber has the belt pulled down towards the bottom of his sash/obi.
1hr 13min 38sec to 40sec = Obi-Wan sneaking through the Death Star hallway scene. Obi-Wan dashes from one side of the hallway to the other and the lightsaber barely sways. Compare this to the next scene of Darth Vader in another hallway where even the slightest twisting of his body upsets the lightweight MPP lightsaber!
1hr 13min 49sec to 51sec = Reversed image scene of Obi-Wan in a Death Star hallway. Obi-Wan's belt is bottomed out on his sash/obi as the weight of the lightsaber has pulled it below his belly.
1hr 25min 07sec to 16sec = Obi-Wan carrying his lightsaber in his left hand up the stairs and across the walkway to the Death Star's Tractor Beam Deactivation Lever scene. Notice how high the unweighted belt rides across his belly through the dead center of his sash/obi.
1hr 25min 19sec to 21sec = Obi-Wan clips his lightsaber to his belt as he rounds the corner headed towards the deactivation lever scene. You can see the weight of the lightsaber pull down on his belt as he releases the weight of the lightsaber into its hook.
1hr 26min 50sec to 58sec = "What was that?" scene as Obi-Wan Force throws a Force pebble past the Stormtroopers to divert their attention. The lightsaber hangs steady until Obi-Wan's left leg thumps it up his thigh and it takes a mighty swing across his center and back over violently to his left as its weight propels it to his left hip where he catches it with his left hand.
1hr 27min 00sec to 02sec = Obi-Wan turns to check behind him before heading back down the stairs scene. His left hand obscures the view of the lightsaber where his hand is laid atop the pommel, but you can see the weight of the lightsaber effecting the belt as it drags down the sash/obi towards the underside of his belly.
1hr 29min 24sec to 28sec = "We think they may be splitting up, they may be on levels 5 and 6 now sir." scene where Obi-Wan emerges from the shadows as the Stormtroopers trot past him. The lightsaber is bonked outward by Obi-Wan's left leg and crashes back down into it. The weight of the lightsaber has pulled his belt back down bellow his belly at the bottom edge of his sash/obi. Obi-Wan detaches the lightsaber from its hook at this point and carries or wields it until his sacrifice/becoming one with the Force.
1hr 29min 56sec = "Open the blast door! Open the blast door!" scene where Obi-Wan confronts Darth Vader in the Death Star's hanger hallway. With his lightsaber in his hand, his belt sits proudly across the top of his belly, right down the middle of his sash/obi. And it remains there throughout the lightsaber duel scenes... why?... because there's no HEAVY ALL-REAL-PARTS-LIGHTSABER hooked to it pulling it down!
Resin. HA! Casting. HA! An Obi-Wan carries not these things!
These time indexes are from the STAR WARS - THE COMPLETE SAGA - 6 DISC BLU-RAY BOX SET, so your timing may vary, but your eyes will see the weight.
Why am I so hungry? Oh yeah, I've completely missed dinner. Off to it then!
THUNK! <----Heavy lightsaber drop. ~Ridire Fíréan out.