@s2art for #PMK and roll film in a tank, my experience was that I would get streaks if I machine processed, but not if I hand processed. For #4x5 in a tray, I could limit the streaks.

With #510pyro my experience is that the streaking is just completely absent, even if I machine #Jobo it. So now everything #35mm, #6x6, #4x5 and #11x14 gets the same treatment, and my calibrations are holding.

@s2art nice; indeed #Jobo tank hand processing w/o the machine is something I've also done a lot (before repairing the beast).

#Xtol is great, on my side I've used lots of different things but converged on #PMK and now #510pyro which I consider the best film dev I've ever used. Superb highlights, deep shadows, and great for both normal silver as well as carbon printing.

For paper dev, for environmental reasons I've shifted to Vitamin C-based ones like Moersch 4812 https://www.moersch-photochemie.de/content/shop/positiv/110

@klizana I didn't find any specs for the #Jobo so I actually just opened it up and back-engineered myself (the circuit is not that complicated if you've ever looked at electronics before). The key was the happenstance knowledge that diode rectifiers aren't meant to last forever, so this alerted me to that component. The voltmeter was indeed all over the place when looking at its connections.

I'm sure there are lots of #CPE2plus and similar out there just tossed in the bin because of this issue.

After a quick intervention with the soldering iron, #RightToRepair wins the day and my old #Jobo #CPE2plus plus friend is as good as new!

It's just great to get such an old beast in proper working order again, without having to break the bank buying a replacement!

This is now my standard dev method for #35mm, #6x6, #4x5 and #11x14.

My beloved home-brewed #510pyro works beautifully, with super-consistent results with all my standard films.

So if you *can* repair, *do*!

🧵 5/5

Confessions of a #darkroom #junkie (part 1 of ♾️ many).

For my #BlackAndWhite neg developing, I've mostly used tanks and trays (for #LargeFormat), but also used a #Jobo #CPE2plus processor.

The problem: it was an old machine and the motor was struggling, only capable of running a couple of minutes at low torque and then stopping 😞.

So I tried to cash in on my #RightToRepair.

Maybe the motor brushes were ruined? Maybe a new motor was needed? (it's in fact a car windshield wiper motor)...
🧵1/ 5