[Shop-talk] Redrilling a 1/4-28 hole

[Mark Watson]

John,

I've used Heli-Coils a couple of times and I found them ok.  Watched enough You-Tube videos where various machinists have used them apparently with success.

However, were I putting in a thread repair for something really important I'd consider Time-Serts: https://time-serts.com/store/1-4-20-thread-repair-kit/

Though the kit for one thread repair is a bit pricey :-( .

Just a thought.

For my fellow Americans Happy Martin Luther King Day.  For everyone else happy Monday.

Good luck,

Mark

>     On 01/16/2023 6:01 AM Ed Reiss <ed.reiss at hotmail.com> wrote:
> 
> 
>     John -- Try a Heli-coil for 1/4-20.
> 
>     You drill out the current hole and rethread using the heli-coil tap. Then thread in the heli-coil. Presto-change-o -- you now have a 1/4-20 threaded hole
> 
>     You might find the heli-coil kit at a well-stocked hardware store or Amazon.
> 
>     Heli-coils are the go-to for stripped threads or any other reason an existing threaded hole is unusable.
> 
>     Good luck
>     Ed
>     --
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