My apologies for not taking part in this discussion earlier. I've been pretty busy lately.
Your HDR looks great, you've done outstanding work, man. Something to be proud of.
Did you use the schematics we have on the forum, or did you make your own, out of the information available here and on the Internet? I'd be curious to see the full schematic you based your device on. Feel free to share it if you feel comfortable, I'd love to see it. Also, if you did use one of our schematics, let us know what you had to change.
It'll sound like I'm a total noob here, but I think this is the first time I see an HDR electromagnet without the tape. For some reason, I imagined it wasn't the same tiny wire as what's inside the HDR. Thank you for sharing these shots.
What were the hardest parts of assembling it? Did you have trouble at any steps along the way?
Again, glad to see these amazing shots and to read about your experience building the device.