Metal tank lid stuck

Discussion in 'B&W: Film, Paper, Chemistry' started by Kvistgaard, May 9, 2008.

  1. Kvistgaard

    Kvistgaard Member

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    Hi all,

    The lid on my Hansa metal development tank is stuck and simply refuses to come off:mad:.

    I've tried to heat the lid in very hot water, hoping it would expand just that tiny bit that would have it slip off the tank, but had no luck. Cooling the lower part did not help either.

    I've also tried wrangling the two parts from each other by brute force. I also tried the opposite - trying to pull them apart with as little force as possible.

    Any suggestions what to do?

    Thanks!
     
  2. glbeas

    glbeas Member

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    I've had to tap the lid off with a knife or scraper against the lower edge of the lid. It takes gentle taps opposite side alternating so it doesn't jam worse.
     
  3. Whiteymorange

    Whiteymorange Member

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    If there is not currently any film in the can, you might consider a drop or two of penetrating oil around the edge. I had to do this once and then get a strap wrench to apply enough force to twist the thing off. A wipe down with naptha finished the job, but that particular tank also got a swipe with 600 sandpaper and a quick coat of wax after the incident. No problems since then.

    If film's in the can, Gary's remedy is all I can see working.
     
  4. df cardwell

    df cardwell Subscriber

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    twisting a coin between the bottom of the lid and the flange of the tank
     
  5. Kvistgaard

    Kvistgaard Member

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    Hi all - thanks for the good advice. Gary's tip did the job. I think I'll give the tank a sanding and a wax coating to avoid this happening again. Luckily, there was no film in the tank this time!
     
  6. eli griggs

    eli griggs Member

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    I suggest you keep a kitchen jar opener in the dark room and in easy reach while developing. The type I use is pictured here and has saved my film several times when a tank top refused to budge. http://flickr.com/photos/54724843@N00/2481573507/
     
  7. df cardwell

    df cardwell Subscriber

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    You might replace the tank with a Kinderman... with a plastic lid !

    (The lids only last 15 years of hard use, so get an extra.)
     
  8. David Brown

    David Brown Subscriber

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    :smile: I keep a strap wrench in the darkroom as a standard tool. Rarely needed, but when it is ...

    PS: Before anybody asks: http://www.mytoolstore.com/klein/s6h.html
     
  9. Phillip P. Dimor

    Phillip P. Dimor Member

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    I do what DF does but with a church key bottle opener. I've an omega simmons tank, it's excellent. The inside of the lid is pitted but is still functional. It is starting to leak slightly but it's not bad. I just wrap a towel around it and go from there.