Broken Screw Problem

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Nipper123
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Broken Screw Problem

Post by Nipper123 »

I recently started working on a Victor III I got for a good price but is in poor condition. I noticed that one of the set screws for the governor bearing was missing. Upon further inspection, I noticed that the screw had snapped in half and is stuck in the casting. My question is how should I go about removing this screw without damaging anything? Any help would be appreciated.

Thank you.
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Django
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Re: Broken Screw Problem

Post by Django »

It looks like someone tried to drill it out. Typically, when the longitudinal forces are removed from a screw which occurred when the governor was removed, the screw should be free to turn unless it is bugged up or corroded. You could apply some penetrating oil and use a scribe to turn it out. If it is stuck, you should find a good machinist to get it out. It’s a fussy job, but not very difficult for someone with a vertical Bridgeport type mill and decent skills.

Where are you located?

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Nipper123
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Re: Broken Screw Problem

Post by Nipper123 »

I am located in Canada.

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Django
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Re: Broken Screw Problem

Post by Django »

Nipper123 wrote: Wed Mar 02, 2022 7:26 pm I am located in Canada.
That’s pretty broad. There are machinists in the group. It’s best if parts don’t have to be shipped. Unfortunately, our USPS has become very unreliable.

JeffR1
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Re: Broken Screw Problem

Post by JeffR1 »

Just because Canada is sparsely populated, doesn't mean that there are no good machinists here that are capable of dealing with such a thing.

Brian Nix is in Ontario.
I don't what he has for a machine shop and repair, it's a place to start.

https://gramophonedoctor.ca/contact/

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Django
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Re: Broken Screw Problem

Post by Django »

JeffR1 wrote: Wed Mar 02, 2022 8:02 pm Just because Canada is sparsely populated, doesn't mean that there are no good machinists here that are capable of dealing with such a thing.

Brian Nix is in Ontario.
I don't what he has for a machine shop and repair, it's a place to start.

https://gramophonedoctor.ca/contact/
I wasn’t knocking Canada’s machinists. I was trying to narrow down the part of Canada. If he was closer, I would offer assistance.

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Nipper123
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Re: Broken Screw Problem

Post by Nipper123 »

Sorry for the confusion, I am in Montreal, Quebec. Could I just drill out the rest of the screw with a normal drill if it is stuck?

JerryVan
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Re: Broken Screw Problem

Post by JerryVan »

JeffR1 wrote: Wed Mar 02, 2022 8:02 pm Just because Canada is sparsely populated, doesn't mean that there are no good machinists here that are capable of dealing with such a thing.

Brian Nix is in Ontario.
I don't what he has for a machine shop and repair, it's a place to start.

https://gramophonedoctor.ca/contact/
Bob Nix. And according to the latest issue of The Antique Phonograph, he sadly has passed away.

JerryVan
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Re: Broken Screw Problem

Post by JerryVan »

Nipper123 wrote: Wed Mar 02, 2022 8:53 pm Sorry for the confusion, I am in Montreal, Quebec. Could I just drill out the rest of the screw with a normal drill if it is stuck?
Yes, you could do that. Use the tap drill size for that specific thread size.

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Django
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Re: Broken Screw Problem

Post by Django »

Nipper123 wrote: Wed Mar 02, 2022 8:53 pm Sorry for the confusion, I am in Montreal, Quebec. Could I just drill out the rest of the screw with a normal drill if it is stuck?
The drill is likely to walk off into the soft cast iron. It is risky.

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