[ATM] Re: Re: Cutting thread in aluminium

["Lee Buse" <lcbuse@comcast.net>]

I've used ordinary hand soap as a lubricant for years for tapping both
Stainless Steel and Aluminum. Works fine, even with very small threads.
Haven't broken a tap since the first time. Rub the tap threads across the
bar of damp hand soap to lubricate.  Tap by twisting about a half a turn
forward until it tightens up, and then a quarter turn back (or so)until it
releases.-- Repeat until done.
Lee

> Date: Fri, 04 Mar 2005 19:19:44 +0000
> From: G?ran Hosinsky <hosinsky@ya.com>
> Subject: Re: [ATM] Cutting thread in aluminium
> To: atm@atmlist.net
> Message-ID: <4228B4D0.3070004@ya.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I was cutting manually so I might have entered the hole at an
> angle. I had drilled the hole with a drill press. But what
> surprised me most was that when I tried to open the hole to
> a bigger diameter, with the drill press, the drill had
> difficulties cutting at that point, the aluminium seemed
> a lot harder.


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