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Thread: Work Holding with Sacrificial Nut and Bolt

  1. #1
    Supporting Member editor@glue-it.com's Avatar
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    Work Holding with Sacrificial Nut and Bolt

    Very simple work holding with a sacrificial nut and bolt. When silver soldering you don’t want your best engineers clamps in the path of a blow torch. Also, you don’t want the thermal mass of a large clamp.

    I often have this problem and resort to a piece of wire that wraps around and is twisted tight. Or I try to balance a fire brick on top to hold it all together. The other option is to use a mechanical joint as well such as a rivet. However, sometimes these are not great options for other reasons.

    Work Holding with Sacrificial Nut and Bolt-nut-bolt-hold-02.jpg

    Even after heating this to 650°C the bolts came apart very easily

    Work Holding with Sacrificial Nut and Bolt-nut-bolt-hold-03.jpg

    I know this is a bit mundane, but sometimes we all need a prod to get us thinking outside of the box.

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  2. The Following 12 Users Say Thank You to editor@glue-it.com For This Useful Post:

    bigtrev8xl (May 7, 2021), Marnat3 (May 5, 2021), mklotz (May 5, 2021), Moby Duck (May 6, 2021), mr mikey (Aug 17, 2023), Paul Jones (May 11, 2021), rgsparber (May 5, 2021), sacco1 (May 6, 2021), Scotsman Hosie (May 10, 2021), Scotty1 (May 5, 2021), techcollect (May 10, 2021), winmac (Jul 21, 2023)

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    Supporting Member mklotz's Avatar
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    Mundane or not, it's an excellent technique

    When constructing model engine "solderments", it's not unusual to hold the parts together with brass screws for soldering and then mill away the exposed part of the screw after soldering. Done carefully the join is undetectable.

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    editor@glue-it.com (May 7, 2021), mcthistle007 (May 10, 2021), Moby Duck (May 6, 2021), Paul Jones (May 11, 2021), Scotsman Hosie (May 10, 2021)

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    I don't get it, what are you soldering? (Sometimes the obvious goes right over my head.)

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    Ralphxyz (May 9, 2021)

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    Thanks editor@glue-it.com! We've added your Silver Soldering Clamp to our Clamps category,
    as well as to your builder page: editor@glue-it.com's Homemade Tools. Your receipt:




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    Supporting Member editor@glue-it.com's Avatar
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    Quote Originally Posted by katy View Post
    I don't get it, what are you soldering? (Sometimes the obvious goes right over my head.)
    Hi Katy, this is a small brass dish made from flat sheet and I'm soldering the flange on the sides together, plus I'm soldering the base in. The tube is for a supply of liquid into the dish. The bolts are temporarily holding the flange together and thus clamping and locking the base plate as well whilst I silver solder (650°C). Hope this helps

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    wombat50 (Aug 17, 2023)

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    Thanks, that makes sense, still smilin', Ken

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    Supporting Member wombat50's Avatar
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    Yes, I was also wondering what was actually being soldered?

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    Supporting Member wombat50's Avatar
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    Sorry, only saw your concise explanation after posting my question 🤗

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    Supporting Member editor@glue-it.com's Avatar
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    Quote Originally Posted by wombat50 View Post
    Sorry, only saw your concise explanation after posting my question ��
    ah, sometimes pictures are not 1000 words

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    Supporting Member mklotz's Avatar
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    Quote Originally Posted by editor@glue-it.com View Post
    ah, sometimes pictures are not 1000 words
    How true! A picture of the word "word" would only be worth a single word.



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