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Thread: To replace a working sac or not?

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    Default To replace a working sac or not?

    I got a Conway 74 into today. It surprisingly has a working sac that feels quite pliable. I'm wondering if it's still worth replacing the sac or not?

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    Member controlsfreak's Avatar
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    Default Re: To replace a working sac or not?

    To me, the peace of mind knowing the sac will not fail is well worth the few dollars cost of a new sac.

    Stacy Hills
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    Default Re: To replace a working sac or not?

    I know I repair pens for a living, but always put a new sac in a pen, even if its my own pen. A sac is under $3 - we often spend that much at Tarbucks without even thinking.

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    Default Re: To replace a working sac or not?

    I don't currently have any sacced pens unless I count my Sheaffer Legacy mk1. But if I pick any up, then I replace their sacs as a matter of course.

    BTW Ron, I wish I could buy sacs for less than $3....
    Regards, Chrissy | My Blog: inkyfountainpens

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    Default Re: To replace a working sac or not?

    I always replace the sac.
    Regards,
    Deb
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    Default Re: To replace a working sac or not?

    I donít replace working sacs. I may end up not liking the pen and not using it. Also, as time goes by i forget when iíve resacced a pen. Was it recent enough? I canít keep track. So i just use it until it doesnít work anymore or i decide to sell it. (And no, iím not going to use a spreadsheet to keep track of work iíve done on pens)

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    Default Re: To replace a working sac or not?

    Given my experience with what a ruptured sac can do, I would always replace.

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    Senior Member Deb's Avatar
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    Default Re: To replace a working sac or not?

    To expand on what I said earlier: I sometimes buy pens that are said to be restored. I check the sac and if it's obviously absolutely brand new I will leave it alone. Otherwise it's replaced. As Chuck said above, a sac that fails can make a real mess that takes time and effort to clean up.. Not only that but sacs gradually stiffen with age. That's not always noticeable but it stresses the lever every time the pen is refilled or flushed. Compared with the price of a good vintage pen, sacs are cheap, especially when bought in quantity from the manufacturer.

    When I sell a sac-filler to a customer I am selling a pen that should work trouble-free for the lifetime of the sac in the pen. I want that lifetime to be as long as possible.
    Regards,
    Deb
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  9. The Following 2 Users Say Thank You to Deb For This Useful Post:

    Chuck Naill (November 30th, 2019), junglejim (November 30th, 2019)

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    Default Re: To replace a working sac or not?

    Quote Originally Posted by Deb View Post
    To expand on what I said earlier: I sometimes buy pens that are said to be restored. I check the sac and if it's obviously absolutely brand new I will leave it alone. Otherwise it's replaced. As Chuck said above, a sac that fails can make a real mess that takes time and effort to clean up.. Not only that but sacs gradually stiffen with age. That's not always noticeable but it stresses the lever every time the pen is refilled or flushed. Compared with the price of a good vintage pen, sacs are cheap, especially when bought in quantity from the manufacturer.

    When I sell a sac-filler to a customer I am selling a pen that should work trouble-free for the lifetime of the sac in the pen. I want that lifetime to be as long as possible.
    Would you think regular rinsing between ink filling would lengthen the life of the sac, Deb? In other words, does the ink eventually destroy the sac?

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    Senior Member Deb's Avatar
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    Default Re: To replace a working sac or not?

    I don't really know the chemistry of sac deterioration but good pen hygiene does seem to prolong the life of a sac. If I'm refilling with the same ink I'm not sure tha I would *always* flush the pen but it's worth doing fairly frequently, not only for the health of the sac but to ensure good flow in the feed and nib. Some inks - as discussed in other threads - leave deposits.
    Regards,
    Deb
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  12. The Following User Says Thank You to Deb For This Useful Post:

    Chuck Naill (November 30th, 2019)

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