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Slender rod turning for 8BA Studs

Tool for turning 2.2 mm rod for making 8BA studs

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thomas oliver 219/01/2015 21:08:23
110 forum posts

I think you will find that the round stays of the average umbrella are 8BA size exactly - if you can find one on the local scrap dump. 2.5mm MS welding rod is the correct size for 7BA studs which are widely used on the smaller Stuart Steam Engines.

David Haythornthwaite20/01/2015 08:16:14
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45 forum posts
7 photos

Thanks for that. Yes - I have no problem with 7BA as you say. Interesting about the umbrellas, I shall keep my eyes open.

Mugging little old ladies to measure their umbrellas with a micrometer seems a bit extreme. I am sure a hunt through the cupboard of SWMBO will turn up something !

Kind Regards

David

Ian S C21/01/2015 09:41:30
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7468 forum posts
230 photos

Some time ago I had an idea, I don't know if it is practical, or some one has done it before. A tool in the form of a button die, but without the thread, an external reamer. I think there was mention of a tool similar to this, with a taper, for making the tapered plug in a plug cock in Model Engineer a good few years back.

Ian S C

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