Very nice work! I do my visors the same way, but I use 0.03" petg. I think I had an issue with anything thicker because it would bubble up. Hope your visibility is ok through that thing! I've seen spray chrome come in an aerosol or just in a container for airbrushing. Which did you use? And also did you happen to use chrome made by a brand called spaz stix? (this is the common american amazon brand, and I assume you're american because you have access to idye poly, which is only sold in the USA as far as i've seen.) I only wonder because sometimes I do things the same way for a long time, and then someone comes along with a better or cheaper way to do stuff and I don't hear about it. XD
I usually get my sheets of petg off ebay. It's alright but I can never consistently find the same product from the same supplier. What's your petg source?
I've had many prints fail because of power outages. Ugh it's the WORST! I thought the CR-10S has print recovery?
Again, fantastic work dude! Not everyone goes through the trouble of making a vacuum formed visor, and I know it can really be tricky. Kudos to you!