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Old 10-01-2019, 09:50 PM
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Default Razor blade welding

In the past I have practiced welding razor blades and pop cans to see if I could do it. Never knew I would have a paying job someday doing it.

Was welding .018” to .022” stainless steel, with the Lincoln 175 square tig. Was a test for low amperage control for sure. Click image for larger version

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Old 10-02-2019, 05:28 AM
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Impressive! and waaaay beyond my pay grade.

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Old 10-02-2019, 06:43 AM
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Nice work!
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Old 10-02-2019, 08:38 AM
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That's awesome.

I've always looked at kitchen gadgets and tried to analyze exactly how they're manufactured. That stuff takes a beating--some of it breaks, and some of it survives. It's good to be able to see what's going to last before you spent money on it.

It's hard to tell how they glue the metal together in stuff like your project there. And then you try and figure out how much time is involved in each piece knowing that they've got to make hundreds of thousands of the things.
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Old 10-02-2019, 09:19 AM
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Originally Posted by dubby View Post
That's awesome.



I've always looked at kitchen gadgets and tried to analyze exactly how they're manufactured. That stuff takes a beating--some of it breaks, and some of it survives. It's good to be able to see what's going to last before you spent money on it.



It's hard to tell how they glue the metal together in stuff like your project there. And then you try and figure out how much time is involved in each piece knowing that they've got to make hundreds of thousands of the things.


The red one was spot welded together. The slice blades was bent into a vee shape with part following curve of round core blade, held together with two spot welds. And the outside was just molded into the plastic, I think. I am not sure if there is any specific marks to hold in plastic though. Maybe I will cut one apart to see.

I cut it apart with a dremel cut off blade, being so small and thin, had to be careful not to go to deep.

The all metal one looks like it was maybe silver soldered to the sharp pin in the center. If I had the silver solder, and more practice, I probably would have done it that way instead of tig welding, but I used what I had and am familiar with. There are some new serrations in the round corer now, due to burn back on the sharpened edge, but I don’t think the apples will know the difference.

It’s sucks the amount of time it takes to cut something apart and refab it like this. I often look at things and am amazed at how cheap we can buy most things at the work that has to make them in the first place. No wonder we are a throwaway society because we can’t afford to repair much due to labor costs. And no, I don’t want to reduce my wage unless the cost of living greatly goes down.


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Old 10-06-2019, 08:07 AM
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Some beautiful work. Fusion weld once the bead gets flowing or a constant dab of filler.
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Old 10-06-2019, 10:51 PM
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Some beautiful work. Fusion weld once the bead gets flowing or a constant dab of filler.


Added filler. It wasn’t the prettiest, but it got the job done. Guy texted me later and said it is working perfectly. Now he wants another one made with a smaller core circle.


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Old 10-12-2019, 03:13 AM
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I used to TIG the inner workings for pressure / vacuum gauges. The more pressure the thicker the wall of the tubing. I got real good at doing the low pressure tubes, 15psi- 30" vacuum .Probably thinner than a dollar bill I'll post pictures if I can find them
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