I've been interested in Zeiss Ikon Super Nettels for the past few months, but they go for $400-$800. So, no way. There was a nice looking one a while back for around $380. I was tempted but I try not to spend more than $120 on a camera, preferably no more than $40. So when I went browsing again for them one showed up in my search for $120 on Bonanza, from a guy in the UK I've bought from before when he was on Etsy. So why was it so cheap? The shutter didn't work. It just so happened I recently watched a video on YouTube where a guy fixed a stuck shutter on a Super Nettel by spraying a load of lithium grease on the gears. It worked... But more importantly for me, he showed how incredibly simple it was to disassemble the camera. Oh, and it was missing the rewind knob.
After a sojourn in LA, the camera arrived today.
Just loosen four screws on the bottom, four screws on the front holding the lens/bellows assembly to the body, and two screws holding the housing for the film canister and take-up reel and you'e ready to clean up the shutter gears. I used lighter fluid, not lithium grease.
The lighter fluid loosened things up as expected. The fast speeds -- 1000, 500, 200, 100 -- worked great. On the slower speeds, the first curtain would begin to open as you cocked the shutter, then the second curtain would close rather slowly when you fired it. Not sure what's going on so will need to do a little research. Or I could just try spraying lithium grease on it.
When I put it back together, even the fast speeds were hanging up. Hmmm. I noticed that someone jerryrigged a little wire for a missing screw. You can see it at the upper right of the last pic. I removed it (it wasn't doing anything as another screw was still in place holding that little disc which itself doesn't seem to be doing anything -- it doesn't move (famous last words).
Anyway, put it back together for now to test the fast speeds. The shutter ribbons look in great shape. The rangefinder seems to be in proper adjustment. Lens looks great. The aperture blades are clean. The lens focus was very stiff at first but working it a bit it's fine now.
EDIT: oh, I see that disc holds the spindle for the second curtain. Maybe I should look for a screw