Trooped yesterday at my local Olympia comic book store for Free Comic Book Day. I checked with the owner earlier to see if it would be something they would be ok with of course. The day promised sunny 70ºF plus temps, and it delivered. I was nervous about that, and also about trooping in general with new parts and a sore back.
I literally just finished putting together my back armor/jetpack assembly the night before. I didn't get to add damage and weathering, but the beacon and other parts were functional. I got to show people the moving rangefinder and other parts as well, like the ROTJ style toy blaster that made noise and lit up, popular with kiddos. Lots of people wanted pics with Boba Fett and during a walk to Old School Pizza for lunch it was like I was Elvis or something, very popular, very fun. Total costume trooping time approx. 4-1/2 hours. The only thing that failed was the hot glue holding the washers to the flak vest, done the night before to help with holding the armor on (previously on the backside) but not up to the heat and movement on the left pectoral plate.
Here's pics of the back armor/jetpack assembly. The jetpack is attached to the armor with screws which also attach a belt that hold it tight around my upper abdomen. While the collar armor hold the top in place, I think some tighter curves at the top of the back armor and maybe some shoulder straps would help it feel secure, even though this worked great. Not so great was my magnetic armor attachment, I'm probably going to change to bolts instead so I don't have to worry about it. The keyboard nuts worked great! I was worried they would get loose but they really held well, and allowed be to be worry free about the backarmor/collar plate attachment as well as the cape attachment. With my glasses off, I can slip the whole thing over my head, and slip the belt through slits in the back of my flak vest, it's really easy to put on.
Obviously my jetpack isn't screen accurate yet, missing piano keys and weathering, as well as the proper missile parts. But it worked well and gave the right impression, and only weighs 2 lbs. 3 oz. IIRC. In the above pic you can see the white straps that "hold it on" even though they're cosmetic in this assembly.
Above is the front view showing the collar plate (now illustration board but soon to be sintra) as well as the hidden belt, and the keyboard keys attachment including cape attachment. Attaching the back armor to the jetpack flattened it out a little, so I'll do some more work with my heat gun to re-curve it at the sides and shoulders. But overall I'm really happy with it, and the sintra 3mm in general. If anyone is on the fence about using it I can highly recommend it, easy to cut and shape, and very durable! Especially compared to paper/illustration board. I plan now to remake all my armor with sintra as well as the jetpack, and possibly a rework of my helmet as well. I'm tired of worrying about the illustration board coming apart. I'll do the armor first, apply for 501st approval, then worry about redoing my helmet and jetpack.