Re: Cheap 56,000RPM milling upgrade (not a dremel :)

> Hi all,
>
> I found this great link while looking around, for about $150 you can
> basically get a air-powered mini die grinder and hold it in a collet on your
> mill with a special hollow drawbar for the air intake. This way you get
> 56,000RPM milling for 2/16" (3MM) and smaller end-mills. But you'll need a
> beefy compressor... You need 28CFM to run it 100% duty cycle, but I think if
> you turned down the pressure you'd just get a little bit lower rate.
>
> http://www.homemetalshopclub.org/news/feb04/feb04.html#mill
>
> For those of you in the UK, I found one for < 100 pounds
>
> http://www.cromwell.co.uk/KBE2702543K?popup=yes
> ~Abby

Abby,
Have you seen this link ?

http://www.hemingwaykits.com/acatalog/Speed_Increaser.html

It was also serialised in Model Engineers Workshop in Vol 101, October 2004.

Plus side of this system is you don't need to use a compressor.

John S.



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