Page 4 of 7 FirstFirst ... 23456 ... LastLast
Results 31 to 40 of 66

Thread: Steel Part Seized in Aluminum

  1. #31

    Re: Steel Part Seized in Aluminum

    Don't worry, I share your enthusiasm for flammable gasses and I'm staying away from them. I have tried a couple of freezing/boiling water cycles, which had no effect. I currently have the parts soaking in PB Blaster and I'm thinking of giving a vinegar soak a try.
    I hope that something will eventually work, if I can be patient enough.


    Quote Originally Posted by Preston View Post
    I would not use propane or any other liquified flammable gas. These materials have very wide explosive ranges and very high expansion ratios, e.g. Propane is 1860:1. Never use liquid oxygen! If it comes in contact with any grease or oil, a flash fire will result! If you do use a liquified gas, I would suggest carbon dioxide. Use it in a well ventilated area. Be sure to use eye protection and suitable gloves.

    --P
    ____________________________________________

    Richard Wasserman

    http://www.richardwasserman.net

    http://richardwassermanphotographer.tumblr.com

  2. #32

    Join Date
    Feb 2006
    Posts
    3,144

    Re: Steel Part Seized in Aluminum

    Quote Originally Posted by Richard Wasserman View Post
    Don't worry, I share your enthusiasm for flammable gasses and I'm staying away from them. I have tried a couple of freezing/boiling water cycles, which had no effect. I currently have the parts soaking in PB Blaster and I'm thinking of giving a vinegar soak a try.
    I hope that something will eventually work, if I can be patient enough.

    If you soak it in vinegar, it likely won't have much effect due to the oil that's already there. Try baking it at about 250f, then dropping it back in the PB Blaster. As it cools, the oil will be drawn into any (now larger due to heat) crevices.

    I cannot stress enough how important patience is.
    One man's Mede is another man's Persian.

  3. #33

    Join Date
    Feb 2006
    Posts
    3,144

    Re: Steel Part Seized in Aluminum

    Well?
    One man's Mede is another man's Persian.

  4. #34

    Re: Steel Part Seized in Aluminum

    Thanks for asking! The part is currently soaking in Kroil. I put it in the oven to warm up before its bath, but so far it shows no signs of movement. I periodically look at it and tap on it—more I think to make me feel like I'm contributing to the process than anything else. You counseled patience and I'm doing my best....

    Any other ideas?

    Quote Originally Posted by E. von Hoegh View Post
    Well?
    ____________________________________________

    Richard Wasserman

    http://www.richardwasserman.net

    http://richardwassermanphotographer.tumblr.com

  5. #35

    Join Date
    Feb 2006
    Posts
    3,144

    Re: Steel Part Seized in Aluminum

    Quote Originally Posted by Richard Wasserman View Post
    Thanks for asking! The part is currently soaking in Kroil. I put it in the oven to warm up before its bath, but so far it shows no signs of movement. I periodically look at it and tap on it—more I think to make me feel like I'm contributing to the process than anything else. You counseled patience and I'm doing my best....

    Any other ideas?
    If I had the part, or could see it, I might have some ideas. Kroil is the best penetrant available, and thermal cycling is good, too.

    If you have an ultrasonic, even a small jewelry cleaner, put it in there in Kroil and give it a blast, as long as the cleaner will tolerate.
    One man's Mede is another man's Persian.

  6. #36

    Join Date
    Oct 2009
    Posts
    81

    Re: Steel Part Seized in Aluminum

    If you could share a picture that would be helpful for troubleshooting.

  7. #37

    Re: Steel Part Seized in Aluminum

    Her's a photo as requested. I have ordered an ultrasonic cleaner which will arrive early next week. I am starting to lose hope of ever getting this apart.
    Attached Thumbnails Attached Thumbnails _DSF0632.jpg  
    ____________________________________________

    Richard Wasserman

    http://www.richardwasserman.net

    http://richardwassermanphotographer.tumblr.com

  8. #38

    Join Date
    Feb 2006
    Posts
    3,144

    Re: Steel Part Seized in Aluminum

    I see a flat. Are there two flats? Have you tried to unscrew it from the housing? What does the service literature say? It appears that the housing and shaft screw into the aluminium; when the part has been screwed in and the gear adjusted to be central over the rack, the set screw is tightened.
    One man's Mede is another man's Persian.

  9. #39

    Re: Steel Part Seized in Aluminum

    There are 2 flats, but the shaft is not threaded, but is an eccentric cam. The shaft is supposed to turn and adjust the placement of the gear (pinion) which mates with the focus rack on the monorail.


    Quote Originally Posted by E. von Hoegh View Post
    I see a flat. Are there two flats? Have you tried to unscrew it from the housing? What does the service literature say? It appears that the housing and shaft screw into the aluminium; when the part has been screwed in and the gear adjusted to be central over the rack, the set screw is tightened.
    ____________________________________________

    Richard Wasserman

    http://www.richardwasserman.net

    http://richardwassermanphotographer.tumblr.com

  10. #40

    Join Date
    Feb 2006
    Posts
    3,144

    Re: Steel Part Seized in Aluminum

    Have you tried twisting it?
    One man's Mede is another man's Persian.

Similar Threads

  1. Aluminum Instead of Stainless Steel for developing
    By ki6mf in forum Darkroom: Film, Processing & Printing
    Replies: 5
    Last Post: 26-Jan-2008, 18:14
  2. aluminum case
    By Raven Garrow in forum Resources
    Replies: 6
    Last Post: 8-Jan-2001, 13:55
  3. aluminum case
    By Raven Garrow in forum Resources
    Replies: 4
    Last Post: 23-May-2000, 20:19
  4. wood or aluminum?
    By Tim Kimbler in forum Gear
    Replies: 2
    Last Post: 21-May-1998, 13:36

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •