Atari ST connectors (was: Atari SIO bus connectors found)

Chuck Guzis cclist at
Thu Nov 1 20:13:49 CDT 2007

On 1 Nov 2007 at 22:36, Tony Duell wrote:

> The wookshp manual [1] I have alongside me gives the removal method as 
> drilling a hole down the middle and then using an easy-out. Does that 
> term exist across the Pond? It's a tapered tool with a left-hand thread 
> on the otuside. Put it down the hole, turn it anticlockwise with a tap 
> wrench [2] and it bites into the sides of the hole and turns the 
> shear-head olt anticlockwise too.

Easy-outs, like tap extractors are perfect examples of oxymorons.  
I've never found an Easy-out that will remove a really stuck sheared-
off bolt, nor have I found a tap extractor that will remove a broken 

I've come to the conclusion that most people who have success with 
tap extractors buy really cheap taps that break if you look at them 
crosseyed.  A good tap, when it breaks is impossible to remove with a 
tap extractor.

A very slick way to remove a steel bolt or tap that's sheared off in 
an aluminum casting (e.g.  a hard disk body) is to use nitric acid 
and a little heat--the acid doesn't bother the aluminum but eats 
enough of the steel to loosen it for removal.  I've heard that alum 
(I don't know what sort, probably amonium) also works.


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